Quantcast
Channel: Environment
Viewing all 2972 articles
Browse latest View live

50 incredible facts about Earth's oceans in one staggering infographic

$
0
0

Covering about 70% of the Earth's surface, the ocean is the biggest reservoir of water from here to the Sun.

That vastness also makes them pretty mysterious. Over the centuries, however, we've learned a lot about the oceans. For example, did you know there's a little gold dissolved in every drop?

The Magazine "Dive.in" and Neo Mam Studios created an incredible graphic with this and 49 other fascinating facts about the ocean. Some are familiar, some may surprise you, and some make it clear just how critical it is that we take care of the only oceans we've got.

50 fascinating facts about the ocean V3 

Join the conversation about this story »

NOW WATCH: 12 shocking facts that will change the way you think about water


New Orleans is trying to ensure that Katrina's devastation never happens again

$
0
0

New Orleans after Katrina

Ten years ago, Hurricane Katrina devastated New Orleans and other parts of the Gulf Coast. It wasn't the first storm to hit the Crescent City, but the failures of the city's protection systems were so dramatic that engineers have revamped the way they prepare for natural disasters.

That's essential, especially since New Orleans faces even greater risks in the future. 

Most of the city is already below sea level, protected by an unreliable system of levees.

Flood risk will grow more severe as rising sea levels and sinking coastal land produce a local increase of at least four feet by the end of the century. And then there's the inevitable increase in major storm surges caused by extreme weather events.

We've created a guide to the crises ahead and the city's best hope for survival.

More than 50% of New Orleans is already below sea level. The only things keeping the city safe are levees and flood walls.



But sea levels are projected to rise by around 4.5 feet this century as global warming causes water to expand and land ice to melt.



Sea levels are rising faster in Louisiana than almost anywhere else due to rapid sinking of marshy coastal land (orange shows land that disappeared between 1937 and 2000).



See the rest of the story at Business Insider

Salads aren't making you happy, and they aren't helping the planet

$
0
0

salad

There are some foods we eat because they're high in protein or fiber, or because they remind us of childhood dinners with our families. 

Then there's salad.

It's a last-resort meal if ever there was one. That work lunch you force yourself to eat on the Monday after a weekend of heavy diet-ruining. You generally feel good immediately after eating a salad, but the feeling wears off soon after when you realize you're still hungry.

You can't even spell the word "salad" without "sad."

As Tamar Haspel from The Washington Post put it recently in a provoking takedown of salad, "Lettuce is a vehicle to transport refrigerated water from farm to table."

Thankfully, emerging science has handed us a few pretty convincing reasons to ditch salads once and for all, the most compelling of which is that salads, for all their bells and whistles, are pretty much ruining the planet.

First off, evidence suggests that a lot of people who buy lettuce throw it away. Nearly 700 million pounds of romaine and leaf lettuce, the bedrock of most salads, end up in the garbage each year, earning the green menace the sorry distinction of being the most wasted vegetable in the country. Just above lettuce are potatoes and tomatoes — no strangers to the salad vessel — at 900 million and 800 million pounds wasted, respectively.

Around the world, some 663 million people don't have access to clean water. Not that lettuce cares. The leafy vegetable is 96% water, all of which gets wasted when disappointed eaters discard their salad remnants and stores toss their unsold produce.

And unlike watermelon, zucchini, or cucumber, all of which deliver a robust profile of nutrients while they hydrate you, lettuce isn't really all that good for you. Aside from water, lettuce contains some chlorophyll and trace amounts of vitamins, which you could easily find elsewhere.

In real terms, that means tens of thousands of acres are getting devoted to a crop that offers nothing unique to people's diets. What's worse, it then gets utilized as the foundation of one of the world's most popular foods, only to be reluctantly choked down or thrown in the garbage. 

The bottom line: We're better than salad, and the Earth will be better off if we give it up.

Join the conversation about this story »

NOW WATCH: Here's what the US would look like if all the Earth's ice melted

A weird property of water is a third of the reason oceans are rising fast

$
0
0

water ice volume temperature thermal expansion

Earth's oceans rose an average of three inches since 1992, and the warming waters show no signs of stopping, NASA announced on August 26.

Steve Nerem, a climatologist who leads NASA's Sea Level Change Team, said "we're locked into 3 feet of sea level rise, and probably more" if the present rate continues.

But as the ocean continues to absorb heat from global warming, that estimate could be an understatement. At risk are low-laying cities like New Orleans, which hurricane Katrina devastated 10 years ago.

Melting glaciers and ice sheets on Greenland and Antarctica are responsible for at least two thirds of sea level rise. The missing piece of the puzzle is a bizarre phenomenon called thermal expansion, which is when heat causes water's volume to expand.

Water is weird. It’s one of the only liquids that expands as it freezes, at 0 degrees Celsius, yet contracts as you warm it up to 4 C. (This is why water ice floats while most other types of ice sink.)

But if you warm up water beyond 4 C, the molecules violently push on one another, expanding the total volume of liquid and making it take up more space.

Earth’s surface has warmed by about 0.8 degrees C on average since 1880, soon after the industrial revolution kicked off.

This increase doesn’t sound like much, explains NASA Earth Observatory, but it has major consequences:

A one-degree global change is significant because it takes a vast amount of heat to warm all the oceans, atmosphere, and land by that much. In the past, a one- to two-degree drop was all it took to plunge the Earth into the Little Ice Age. A five-degree drop was enough to bury a large part of North America under a towering mass of ice 20,000 years ago.

And our world is under going some extensive warming, especially in the northern pole:

nasa global warming temperature anomalyThe Earth’s oceans are especially at risk — they have responded to this increase by soaking up more and more heat as global temperatures climb:

ocean water heat content

And since water expands when heated, this excess heat absorption has expanded the volume of Earth’s oceans.

As of right now, this volume increase by only a mere fraction of a percent of the ocean's original volume.

Yet applied to even part of the planet's 335 million cubic miles of water, e.g. surface waters, this increase adds up to significant sea level rise — on top of increased water runoff from the world's melting ice reserves.

sea level rise accelerating

According to the Union of Concerned Scientists, sea levels rose about 8 inches from 1880 to 2009, with thermal expansion as the predominant cause.

The new data from NASA show a rise of 3 inches since 1992 — a big jump compared to the past 100-or-so years.

Again, this doesn’t sound like much. But any increase gives storm surges that much of a leg up to overwhelm coastal marshes, topple levees, and cause damage deeper and deeper inland.

This is a simplistic illustration of what that looks like for coastal cities, but it's a dangerous scenario:

storm surge baseline sea level rise ucs

What’s more, the rate of sea level rise is only accelerating as oceans soak up more heat, expand, and icebergs and glaciers continue to melt.

sea level rise thermal expansion melting ice contribution

Earth is maddeningly dynamicespecially the oceans. That’s partly why it takes so long to reveal these trends in the first place; you have to take measurements over long periods of time to see the trends.

To that end, researchers are still uncertain about the interplay of surface water and deep-ocean warming. But it’s a given that if the planet keeps warming, as it’s on track to, and oceans continue to soak up heat, vulnerable coastal cities like New Orleans are in a heap of trouble.

Join the conversation about this story »

NOW WATCH: Animated map shows what would happen to China if all the Earth's ice melted

10 years after Hurricane Katrina, here's why New Orleans still faces disaster

$
0
0

New Orleans after Katrina

Ten years ago, Hurricane Katrina devastated New Orleans and other parts of the Gulf Coast. It wasn't the first storm to hit the Crescent City, but the failures of the city's protection systems were so dramatic that engineers have revamped the way they prepare for natural disasters.

That's essential, especially since New Orleans faces even greater risks in the future. 

Most of the city is already below sea level, protected by an unreliable system of levees.

Flood risk will grow more severe as rising sea levels and sinking coastal land produce a local increase of at least four feet by the end of the century. And then there's the inevitable increase in major storm surges caused by extreme weather events.

We've created a guide to the crises ahead and the city's best hope for survival.

More than 50% of New Orleans is already below sea level. The only things keeping the city safe are levees and flood walls.



But sea levels are projected to rise by around 4.5 feet this century as global warming causes water to expand and land ice to melt.



Sea levels are rising faster in Louisiana than almost anywhere else due to rapid sinking of marshy coastal land (orange shows land that disappeared between 1937 and 2000).



See the rest of the story at Business Insider

A green, neatly trimmed symbol of the American dream has outlived its purpose

$
0
0

Business Man Reading Newspaper on Lawn

The hashtag #droughtshaming—which primarily exists, as its name suggests, to publicly decry people who have failed to do their part to conserve water during California’s latest drought—has claimed many victims.

Anonymous lawn-waterers. Anonymous sidewalk-washers. The city of Beverly Hills.

The tag’s most high-profile shamee thus far, however, has been the actor Tom Selleck. Who was sued earlier this summer by Ventura County’s Calleguas Municipal Water District for the alleged theft of hydrant water, supposedly used to nourish his 60-acre ranch. Which includes, this being California, an avocado farm, and also an expansive lawn.

The case was settled out of court on terms that remain undisclosed, and everyone has since moved on with their lives.

What’s remarkable about the whole thing, though—well, besides the fact that Magnum P.I. has apparently become, in his semi-retirement, a gentleman farmer—is how much of a shift all the Selleck-shaming represents, as a civic impulse.

For much of American history, the healthy lawn—green, lush, neatly shorn—has been a symbol not just of prosperity, individual and communal, but of something deeper: shared ideals, collective responsibility, the assorted conveniences of conformity.

Lawns, originally designed to connect homes even as they enforced the distance between them, are shared domestic spaces. They are also socially regulated spaces.

“When smiling lawns and tasteful cottages begin to embellish a country,” Andrew Jackson Downing, one of the fathers of American landscaping, put it, “we know that order and culture are established.”

That idea remains, and it means that, even today, the failure to maintain a “smiling lawn” can have decidedly unhappy consequences.

Section 119-3 of the county code of Fairfax County, Virginia—a section representative of similar ones on the books in jurisdictions across the country—stipulates that “it is unlawful for any owner of any occupied residential lot or parcel which is less than one-half acre (21,780 square feet) to permit the growth of any grass or lawn area to reach more than twelve (12) inches in height/length.”

And while Fairfax County sensibly advises that matters of grass length are best adjudicated among neighbors, it adds, rather sternly, that if the property in question “is vacant or the resident doesn’t seem to care, you can report the property to the county.”

That kind of reporting can result in much more than fines.

In 2008, Joe Prudente—a retiree in Florida whose lawn, despite several re-soddings and waterings and weedings, contained some unsightly brown patches—was jailed for “failing to properly maintain his lawn to community standards.”

Earlier this year, Rick Yoes, a resident of Grand Prairie, Texas, also spent time behind bars—for the crime, in this case, of the ownership of an overgrown yard.

Gerry Suttle, a woman in her mid-70s, recently had a warrant issued for her arrest—she had failed to mow the grass on a lot she owned across the street from her house—until four boys living in her Texas neighborhood heard of her plight in a news report, came over, and mowed the thing themselves.

California drought

This kind of lawn-based rogue-going is, apparently, quite common.

The environmental science professor Paul Robbins’s book, Lawn People: How Grasses, Weeds, and Chemicals Make Us Who We Are, is full of stories of people asking their neighbors, with concern ranging from the fully earnest to the fully passive-aggressive, whether a broken mower might account for an overgrown yard, and of others surreptitiously mowing other people’s lawns when they’re away on vacation.

The Great Gatsby’s titular character exhibits a similar case of what we might call FOMOW: So troubled is Jay by Nick’s failure to maintain his lawn—a lawn that abuts Gatsby’s—that he ends up sending his own gardener to do the shearing, thereby restoring order to their shared pastoral space.

The existence, in the world beyond West Egg, of apps like DroughtShame—which promises to help its users “capture geotagged photo proof of disregard for California’s water restrictions”—is an extension of that ethos.

Lawns are private tracts that are, sometimes by law and always by social fiat, shared. Their proper maintenance is part of the compact we make with each other, the logic goes, not just in the name of “order and culture,” but in the name, in some sense, of civilization itself.

And in the name, too, of that fuzzy, fizzy ideal that we shorthand as “the American dream.” Land—“This Land,” your land, my land—transcends, at its most ideal and idyllic, anthropological divisions of race and class.

It is “too important to our identity as Americans,” Michael Pollan put it, “to simply allow everyone to have his own way with it. And once we decide that the land should serve as a vehicle of consensus, rather than an arena of self-expression, the American lawn—collective, national, ritualized, and plain—begins to look inevitable.”

Which is all to say that lawns, long before Tom Selleck came along, have doubled as sweeping, sodded outgrowths of the Protestant ethic.

The tapis vert, or “green carpet”—a concept Americans borrowed not just from French gardens and English estates, but also from the fantastical Italian paintings that imagined modern lawns into existence—became signals that the new country aspired to match Europe in, among other things, elitism.

(Lawns, in Europe, were an early form of conspicuous consumption, signs that their owners could afford to dedicate grounds to aesthetic, rather than agricultural, purposes—and signs, too, that their owners, in the days before lawnmowers lessened the burden of grass-shearing, could afford to pay scythe-wielding servants to do that labor.)

Thomas Jefferson, being Thomas Jefferson, surrounded Monticello not just with neatly rowed crops, but with rolling fields of grass that served no purpose but to send a message—about Jefferson himself, and about the ambitions of his newly formed country.

 

As that country developed, its landscape architects would sharpen the message about lawns as symbols of collectivity and democracy itself.

“It is unchristian,” the landscaper Frank J. Scott wrote in The Art of Beautifying Suburban Home Grounds, “to hedge from the sight of others the beauties of nature which it has been our good fortune to create or secure.”

He added, confidently, that “the beauty obtained by throwing front grounds open together, is of that excellent quality which enriches all who take part in the exchange, and makes no man poorer.”

Lawns became, in that conception, aesthetic extensions of Manifest Destiny, symbols of American entitlement and triumph, of the soft and verdant rewards that result when man’s ongoing battles against nature are finally won.

A well-maintained lawn—luxurious in its open space, implying leisure if not always allowing it—came, too, to represent a triumph of another kind: the order of suburbia over the squalor of the city. A neat expanse of green, blades clipped to uniform length and flowing from home to home, became, as Roman Mars notes, the “anti-broken window.”

In the century so influenced by the engineerings of Frank J. Scott, Andrew Jackson Downing, and Frederick Law Olmsted, suburbs brought even more order to the American landscape.

And the lawn—its cause furthered by the Levittown model and the introduction of the motorized lawnmower and the Haber-Bosch fertilizing process and the mid-century’s faith in the easy virtues of conformity—spread. Sod and seeds were relatively easy to install. (They still are: See the seed mixture nicknamed “contractor’s mix” for its popularity among developers as a quick-and-easy way to landscape.)

And lawns offered a metaphor for, if not a full mimcry of, the new national highway system. They unified the country, visually if not politically. And symbolically if not actually. During a time of upheaval, the lawn suggested a sense of structure and calm.

It also suggested an order of another kind: the neat division of domestic labor.

Lawnmowers, when they first emerged, were almost uniformly marketed to men as tools for maintaining their outdoor domiciles—the masculine equivalent, the logic went, of the wifely spaces that were kitchens and living rooms and bedrooms.

The yard—where kids play, where dogs frolic, where fun is had and jungles are gymed and meat is grilled upon open flames—became portrayed, commercially, as a semi-wild domestic space whose wildness needed to be tamed by a masculine influence.

Which is an idea that carries on in pop culture, not to mention in pretty much every Father’s Day-timed ad for Home Depot or Lowe’s or John Deere. A few years ago, Yankee Candle took the unusual step of marketing a candle to men. Its scent was evocative of freshly cut grass, and its name was “Riding Mower.”

California is encouraging people to cut back on lawn watering.

The ads make clear how continuous the mower messaging has been between the past century and the current.

Today, still, lawns are vaguely gendered; their pleasures are partly performative; their leisures are largely laborious. They emit not just oxygen, but also the whiff of ritualized self-sacrifice.

The more expansive they are, the more expensive.

Americans, as of 2009, were spending about $20 billion a year on lawn care. And that’s because grass is stubborn stuff, and living stuff, and its encoded impulses—to grow tall, to strive sunward, to reproduce—run generally contrary to our own desires. (As Paul Robbins notes, “We don’t let grass get tall enough to go to seed, but we also water and fertilize it to keep it from going dormant. We don’t let it die, but we also don’t let it reproduce.”)

Growing and mowing, animal against vegetable, cyclical and Sisyphean: There is a ceaselessness to the whole thing that is both Zen-like and very much not.

Lawns need cajoling for them to do what we demand of them.

The seeds for most of the turf grasses that carpet the surface of the U.S.—your Kentucky blues (originally, actually, from Europe and northern Asia), your Bermudas (originally from Africa), your Zoysias (originally from East Asia), your hybrids thereof—are generally not native to the U.S. Which means that, while the grasses can certainly survive here, they will probably not, on their own, thrive.

A lawn of American Dream Perma-Green requires, generally, more water than natural rainfall provides. It requires soil whose nutrient content is plumped up by fertilizer. It requires, in some cases, pesticides.

And yet symbiosis is on the turf’s side, despite and because of all that, because we need the grasses as much as they need us. We spend our money and our natural resources and our time cultivating our carpets of green not just because we want to, but because we are expected to.

The expense is the tribute we pay to our fellow Americans, the rough equivalent of taxes and immunizations and pleases and thank yous and coughing into our arms rather than into the air.

To maintain a lawn is—or, more specifically, has been—to pay fealty to the future we are forging, together.

Which brings us back—as most things will, probably, in the end—to Tom Selleck. Whose water-shaming represents a notable and sharp shift away from all that, if you will, deeply rooted symbolism.

Selleck’s crime, after all, was pretty much the opposite of the “crimes” committed by Joe Prudente and Gerry Suttle and Nick Carraway. All he was doing, in his blithe, rich-person way, was keeping up what until very recently would have been his end of the cultural bargain: maintaining his grounds, keeping his green, preventing his little section of the national carpeting from drying out and dying off.

What he ignored, of course, was the transformation the #droughtshaming hashtag suggests: That the virtues and vices of our stewardship of the natural world have now switched places, making the civic thing to do—the communal thing, the responsible thing, the respectable thing—to ignore the lawn.

lawn

The ground beneath Selleck’s feet had shifted. And that ground, his critics raged, was far too green.

The shift, of course, took place most immediately because of California’s years-long drought, and because grass, per the EPA’s nationwide estimate, requires 9 billion—that’s not a typo; billion with a b—gallons a day to keep green.

But it also took place, just as likely, because of anti-lawn sentiment that has been long-simmering among environmentalists, among journalists, and among activists.

ichael Pollan, before turning his attention to the food economy, wrote an entire book—two of them, actually—making the case against lawns. So did Sara Stein. So did, if perhaps unwittingly, Rachel Carson: Silent Spring, in its tracing of the path of pesticides through the American environment, repeatedly implicated the suburban backyard. Lorrie Otto, who founded the anti-grass movement that became known as “Wild Ones,” condemned lawns as “sterile,” “monotonous,” “flagrantly wasteful,” and, in all, “really evil.”

The web, more recently, has given rise to shorter, even angrier screeds against lawns. (Two recent, representative examples: Harvard Magazine’s “When Grass Isn’t Greener,” which quotes a botanist calling lawns “horrible,” and the Washington Post’s declaration that “Lawns Are a Soul-Crushing Timesuck and Most of Us Would Be Better Off Without Them.”)

We have a new environmentalism that is rapidly shifting from the stuff of hippie morality to the stuff, more simply and more urgently, of survival.

These warnings, until recently, have gone largely ignored.

California, drought notwithstanding, remained home to stretches of imported greenery—around homes, around malls, atop golf courses dotting the desert with their false oases.

A2005 NASA study derived from satellite imaging—the most recent such study available—found that turf grasses took up nearly 2 percent of the entire surface of the continental U.S. And that was including the vast stretches of land that remained undeveloped.

Broken out by state, some 20 percent of the total land area of Massachusetts and New Jersey was covered in lawn. Delaware was 10 percent turf. There were in all, per that same NASA satellite study, around 40 million acres of lawn in the contiguous U.S. Which meant that turf grasses took up roughly three times as much area as irrigated corn. Corn!

As of 2005, in other words, turf grasses—vegetables that nobody eats—were the single largest irrigated crop in the country.

Which is, in practical terms, fairly absurd.

And yet it is the situation—it is our situation—for roughly the same reason that Joe Prudente went to jail for unsightly brown spots: Lawns mean something to Americans, symbolically and psychically and maybe even spiritually. They speak to our values, our aspirations, our hopes both feasible and foolish.

So, yes, we could do what so many environmentalists and journalists have been begging us to do, for so long: to get rid of our lawns, replacing our languid, laborious expanses of grass with artificial turf, or re-landscaping with native plants, or xeriscaping (landscaping that reduces or eliminates the need for supplemental watering).

lawn mower yard grass cutting grass

We could do what governments of Western states—California, Arizona, Nevada—have tried: paying people to get rid of their lawns, at prices ranging from $1 to $4 per square foot.

We could. We probably should. The problem is, though, that culture changes as gradually as grass grows quickly. Iconography is much harder to uproot than grass.

To give up our lawns would be, in some sense, to concede a kind of defeat—to nature, to the march of time, to our own ultimate impotence. And it would, in its recognition of the ecosystemic realities of the latest century, require us to do something Americans have not traditionally been very good at: acknowledging our own limitations.

Now, though, we don’t just have drought.

We also have Priuses and Leafs and Teslas, their environmental messages acting as their own status symbols. We have “organic” and “local” and “sustainable” being tossed around not just in the kitchens of Chez Panisse and Blue Hill, but on the Food Network and in the aisles of Walmart produce sections. We have online quizzes offering to help us figure out our individual carbon footprints. We have a new environmentalism that is rapidly shifting from the stuff of hippie morality to the stuff, more simply and more urgently, of survival.

We have Courthouse News Service analyzing an aerial photo of Tom Selleck’s compound and reporting, with a sense of both surprise and relief, that the ranch features “plenty of brown grass.”

California Gov. Jerry Brown

Earlier this year, the California Governor Jerry Brown—the name will prove either deeply ironic or deeply fitting—issued an executive order mandating that citizens across the state reduce their water consumption by 25 percent.

This was in response, of course, to the drought. But it was also in response to a broader shift in the way we humans think about our natural resources, in the way we relate to the world around us.

“We’re in a new era,” Brown explained. “The idea of nicely green grass fed by water every day—that’s going to be a thing of the past.”

Maybe we really are in a new era.

Maybe it will signal the end of our love affair with lawns. Maybe the new national landscape—a shared vision that inspires and enforces collective responsibility for a shared world—will take on a new kind of wildness. Maybe, as the billboards dotting California’s highways cheerily insist, “Brown Is the New Green.”

Maybe the yard of the future will feature wildflowers and native grasses and succulent greenery, all jumbled together in assuring asymmetry. Maybe we will come to find all that chaos beautiful.

Maybe we will come to shape our little slices of land, if we’re lucky enough to have them, in a way that pays tribute to the America that once was, rather than the one we once willed.

RELATED: New York is facing its biggest threat ever, and people are still in denial

SEE ALSO: Devastating photos of California show how bad the drought really is

Join the conversation about this story »

NOW WATCH: People were baffled by 50 sharks circling in shallow waters off the English coast

Something historic is happening with hurricanes in the Pacific Ocean — and it could mean trouble

$
0
0

There are some storms a-brewin' ...

And although none of them have made landfall, they're making part of the Pacific Ocean near Hawaii resemble a Van Gogh painting.

three hurricanes

Here's a photo showing Hurricanes Kilo, Ignacio, and Jimena from left to right. This is the first time three Category 4 storms have been seen in the central and eastern Pacific Ocean at one time, according to The Weather Channel. Category 4 hurricanes have wind speeds anywhere from 130 to 156 mph.

Hurricanes are categorized primarily by wind speeds: The higher the sustained wind speed, the stronger the hurricane. A Category 1 hurricane has winds up to 74 to 95 mph, and the National Oceanic and Atmospheric Administration says they're typically expected to cause some damage to buildings as well as power outages for a few days.

A Category 4 hurricane is considered catastrophic, with severe damage to buildings and power outages for weeks if not months.

By Sunday, Kilo and Ignacio had eased up to Category 3. So far, none of the hurricanes have made landfall. Ignacio, the one closest to Hawaii, has been weakening ever since Saturday, and now looks like it might miss the islands completely.

Jimena is still a Category 4, but is still a few days off from running into Hawaii.

Here's another shot of the storms via the NOAA's View Data Exploration Tool August 30:

TRUE.daily.20150830.color.bbox=33.75,171.562, 5.625, 118.125.full_res

The uptick in hurricanes is consistent with El Niño predictions. The NOAA predicted a 70% chance of an above-normal hurricane season.

Looks like we're getting exactly that ...

CHECK OUT: One of the world's most threatening glaciers just lost a chunk large enough to cover Manhattan in 1,000 feet of ice

UP NEXT: Eye-opening photos show how New Orleans is still struggling 10 years after the costliest natural disaster in US history

Join the conversation about this story »

NOW WATCH: A devastating look at the California drought

Thousands of walruses are stranded together on an Alaskan beach

$
0
0

Walruses

Last September, somewhere around 35,000 walruses crowded ashore in Point Lay, Alaska, driven to land because the Chukchi Sea ice floes they'd normally rest on had melted.

This year, which had a record low amount of winter sea ice in the Arctic, a massive walrus "haul out" has started to happen again.

Photographer Gary Braasch first spotted the walruses hauling themselves ashore on a barrier island at Point Lay August 23 while doing a flyover near the area.

Braasch told Chelsea Harvey at The Washington Post that he shot his images from more than a mile away from the walruses — the above image is cropped — which is necessary to avoid scaring them and causing them to panic and stampede, crushing and killing younger and smaller members of the herd.

Still, The Guardian reports that US Fish and Wildlife Service officials are investigating whether Braasch's flight could have put the creatures at risk, and Harvey explains that the local tribal council president was still angered by the flyover and the potential disruption it could have caused.

WalrusesStampedes aren't the only risk in a walrus haul out. The lack of sea ice that drives them to shore means they're further from their food supply.

This year, the Fish and Wildlife Service told the Post that there are already between 5,000 and 6,000 walruses on shore in August. Haul outs don't usually start until September, but they're happening more in recent years as Arctic sea ice continues to decline. Experts expect more walruses to gather through October.

President Barack Obama arrives in Alaska to visit the Arctic and draw attention to climate change today. But if we pay attention, there are plenty of signs of a changing climate already visible in nature.

We've reached out to the Fish and Wildlife Service for more information, and will update this post when we hear back.

Join the conversation about this story »

NOW WATCH: Harrison Ford has some advice for the new ‘Star Wars’ cast in his first on-camera interview since the accident


What the West Coast will look like under 25 feet of water

$
0
0

Coastal cities could see a rise in sea levels by as much as 4 ft by the end of the century. To help put a visual to the number, artist Nickolay Lamm created this series of simulations of West Coast city landmarks as affected by sea levels rising 5, 12 and 25 feet. Using Climate Central's sea level rise maps, Lamm imagines recognizable locales such as Venice Beach, San Francisco, and San Diego with catastrophic flooding. 

Produced by Rob Ludacer

Follow TI: On Facebook

Join the conversation about this story »

Elon Musk says humanity is currently running 'the dumbest experiment in history'

$
0
0

Elon Musk - Sun Valley

At some point humans are going to run out of the fossil fuels that power our lives.

There is no other end point to the current era than to stop using fossil fuels — either because we've used them all up or because we cannot bear any further destruction of the Earth's climate.

If you use data from oil and gas giant BP, as the data cataloguers at Knoema did, at present rates of extraction we'll be out of oil by 2067, natural gas by 2069, and coal by 2121.

It's possible that we'll discover more oil trapped in tar sands or deep under the ocean, but it just gets more expensive and riskier to extract.

And we'll still run out.

Plus — we don't even want to use all the fossil fuels we have. Burning that fossil fuel makes the atmosphere warmer, and burning coal (which will be what's left if we run out of oil and gas) is worse than using other fuels.

If we get to that point, the limiting factor won't be how many years of fossil fuels we have left, it will be how much more atmospheric change the planet can take. Some researchers already think we've reached the point where there's enough carbon in the atmosphere to cause catastrophic impacts to humanity.

That's why video game designer/Iron Man-protagonist Elon Musk tells Wait But Why's Tim Urban that the "indefinite extension of the Fossil Fuels Era" is "the dumbest experiment in history."

As Musk further explains it:

"The greater the change to the chemical composition of the physical, chemical makeup of the oceans and atmosphere [due to increased carbon emissions], the greater the long-term effect will be. Given that at some point they'll run out anyway, why run this crazy experiment to see how bad it'll be? We know it's at least some bad, and the overwhelming scientific consensus is that it'll be really bad."

This feeling is what led Musk to get involved with the electric car company that became Tesla, as he tells Urban in one part of a wide-ranging conversation.

Tesla's official mission is "to accelerate the advent of sustainable transport by bringing compelling mass market electric cars to market as soon as possible."

The idea is to convince the world that moving away from fossil fuels is possible, because this will have to happen no matter what, and the sooner it happens the better a state the world will be in.

Here's a Wait But Why chart that explains where we're at:

fossil fuels timelineRight now, we're just going along using fossil fuels, despite the fact that we know this is a bad idea and it has an endpoint.

Join the conversation about this story »

NOW WATCH: Now we're really getting an idea of how the new 'Heroes' reboot is going to look

Elon Musk says humanity is currently running 'the dumbest experiment in history'

$
0
0

Elon Musk - Sun Valley

At some point humans are going to run out of the fossil fuels that power their lives.

There is no other end point to the current era — either because we've used them all up or because the Earth's climate cannot bear any further destruction.

If you use data from oil and gas giant BP, as the data cataloguers at Knoema did, at present rates of extraction we'll be out of oil by 2067, natural gas by 2069, and coal by 2121.

It's possible that we'll discover more oil trapped in tar sands or deep under the ocean, but it just gets more expensive and riskier to extract.

And we'll still run out.

Plus — we don't even want to use all the fossil fuels we have. Burning nonrenewable fuels makes the atmosphere warmer, and burning coal (which will be what's left if we run out of oil and gas) is worse than using other energy sources.

If we get to that point, the limiting factor won't be how many years of fossil fuels we have left, it will be how much more atmospheric change the planet can take. Some researchers already think we've reached the point where there's enough carbon in the atmosphere to cause catastrophic impacts to humanity.

That's why video game designer/Iron Man-protagonist Elon Musk tells Wait But Why's Tim Urban that the "indefinite extension of the Fossil Fuels Era" is "the dumbest experiment in history."

As Musk further explains it:

"The greater the change to the chemical composition of the physical, chemical makeup of the oceans and atmosphere [due to increased carbon emissions], the greater the long-term effect will be. Given that at some point they'll run out anyway, why run this crazy experiment to see how bad it'll be? We know it's at least some bad, and the overwhelming scientific consensus is that it'll be really bad."

This feeling is what led Musk to get involved with the electric car company that became Tesla, as he tells Urban in one part of a wide-ranging conversation.

Tesla's official mission is "to accelerate the advent of sustainable transport by bringing compelling mass market electric cars to market as soon as possible."

If Tesla can convince the world that cars can run without oil, that would make a huge difference — burning oil is responsible for about a third of greenhouse gas emissions, and getting electricity from a power plant through an electrical grid is more efficient than burning gas.

Even in places in the US where coal provides a good proportion of electrical power, electric vehicles are still cleaner than gas-powered cars. But for true sustainability, electricity production needs to change too. In particular, countries need to stop using coal, as soon as possible.

Sustainable alternatives include renewables like hydroelectric power, wind power, solar power, and geothermal power. Nuclear power is also far cleaner than any sort of fossil fuel energy source.

Musk's idea is to convince the world that moving away from fossil fuels is possible, because this will have to happen no matter what, and the sooner it happens the better shape the world will be in.

Here's a Wait But Why chart that explains where we're at:

fossil fuels timelineRight now, we're just going along using fossil fuels, despite the fact that we know this is a bad idea and it has an endpoint. The sooner we get past that point and move to the next era in energy, the better.

Join the conversation about this story »

NOW WATCH: Now we're really getting an idea of how the new 'Heroes' reboot is going to look

I went to the source of the world's best coffee — and saw firsthand why the industry is in trouble

$
0
0

felix and life monteverde packages

Whether you prefer a straight shot of tangy espresso or a few sweet sips of a blended coffee drink, chances are you love coffee.

Not only is this bittersweet drink one of the most widely consumed beverages in the world, its active ingredient — caffeine — is the most popular psychoactive drug.

We recently visited a coffee farm in Costa Rica, one of the world's most desirable locations for growing and harvesting the crop.

The coffee plants here, just like those across the globe, face a big challenge: All of them are sourced from just a handful of original Ethiopian plants, meaning they're genetically similar and highly vulnerable to climate change.

Take a walk through a Costa Rican coffee farm and see how the threatened but valued crop goes from berry to brew:

UP NEXT: What caffeine does to your body and brain

SEE ALSO: 11 health benefits of caffeine, the most commonly used psychoactive drug in the world

Our drive to a coffee farm called Cafe Monteverde took us up a mountain on a dirt road for about an hour and a half. On our way, we got some breathtaking views of the area's rugged, hilly terrain and gorgeous forest cover.



The region of Monteverde, where a lot of Costa Rica's coffee is grown, is a misty, cloud-enshrined area about three hours from San Jose, the capital. The humid, shady climate is ideal for growing coffee plants, but the drive to reach it can be a challenge if you're not familiar with the roads.



My partner (right) and I were introduced to the farm by Felix Salazar (left), a nature photographer born and raised in Monteverde who also works on the farm and gives tours in his free time. Felix walked us through the rolling green fields where the coffee for Cafe Monteverde is grown.



See the rest of the story at Business Insider

NOW WATCH: Here's a time-lapse of the Perseids — the most stunning meteor shower of the year

This video from NASA shows just how much garbage has filled up our oceans

$
0
0

nasagarbagevid

New research suggests that 90% of seabirds have plastic in their guts as the result of material dumped at sea.

The news highlights the problem of garbage patches — mostly plastic particles gathered by currents — that have formed in our oceans to the detriment of marine life.

NASA, the US space agency, has just released a new video that takes data from scientific buoys distributed by the National Oceanic and Atmospheric Administration in the oceans over the last 35 years to show how these garbage patches are formed.

The same currents that help to form the garbage patches might also be used to help clear them up, according to  Dutch entrepreneur and inventor Boyan Slat who hopes to start work on clearing up the Great Pacific Garbage Patch in the middle of next year.

Video source: NASA’s Scientific Visualization Studio

All opinions expressed are those of the author. The World Economic Forum Blog is an independent and neutral platform dedicated to generating debate around the key topics that shape global, regional and industry agendas.

Join the conversation about this story »

NOW WATCH: Here's how optical illusions actually work

This photo of Obama staring down a melting glacier is a dramatic sounding of the alarm on climate change

$
0
0

Barack Obama glacier

President Barack Obama stared down a melting glacier in Alaska on Tuesday in a dramatic use of his presidential pulpit to sound the alarm on climate change.

From a distance, Exit Glacier appears as a river of white and blue flowing down through the mountains toward lower terrain. In fact, it's just the opposite. The 2-mile-long chock of solid ice has been retreating at a faster and faster pace in recent years — more than 800 feet since 2008, satellite tracking shows.

"This is as good of a signpost of what we're dealing with when it comes to climate change as just about anything," Obama said with the iconic glacier at his back.

Obama traveled to the glacier in a carefully choreographed excursion aimed at calling attention to the ways he says human activity is degrading cherished natural wonders. The visit to Kenai Fjords National Park, home to the Exit Glacier, formed the apex of Obama's three-day tour of Alaska, his most concerted campaign yet on climate change.

The president, dressed for the elements in a rugged coat and sunglasses, observed how signposts along the hike recorded where the glacier once stood but now only dry land remains.

"We want to make sure that our grandkids can see this," Obama said, describing the glacier as "spectacular."

Barack Obama glacier

In another presidential photo-op brimming with theatrical potential, Obama stood on the bow of a tour boat in Resurrection Bay in Alaska's Kenai Peninsula, staring out at the serene waters and lush mountain vistas in both directions. Photographers and reporters traveling with the president were brought alongside him in a separate boat to capture the moment in living color.

Spotted on his voyage: a humpback whale, and sea lions "hauled out" on a rock jutting out of choppy waters.

Obama is counting on Alaska's exquisite but deteriorating landscape to elicit a sense of urgency for his call to action on climate change. He opened his trip on Monday with a speech painting a doomsday scenario for the world barring urgent steps to cut emissions: entire nations submerged underwater, cities abandoned, and refugees fleeing in droves as conflict breaks out across the globe.

"Climate change is no longer some far-off problem," Obama said Monday. "It is happening here. It is happening now. Climate change is already disrupting our agriculture and ecosystems, our water and food supplies, our energy, our infrastructure, human health, human safety — now. Today. And climate change is a trend that affects all trends — economic trends, security trends. Everything will be impacted. And it becomes more dramatic with each passing year."

Exit Glacier has been receding for decades at an alarming rate of 43 feet a year, according to the National Park Service, which has been monitoring its retreat for decades using photography and, more recently, by satellite.

Glaciers ebb and flow because of normal fluctuations in the climate, and even without human activity, Exit Glacier would be retreating. But the pace of its retreat has been sped up thanks to heat-trapping greenhouse gases blamed for global warming, Deborah Kurtz of the Park Service said.

"Climate is the primary driver for the retreat of glaciers and for ice loss," Kurtz said.

Obama Bear GryllsThe president's trip has been more about visuals than words, with the White House putting a particular emphasis on trying to get his message across to audiences who don't follow the news through traditional means. To that end, Obama taped an episode of the NBC reality TV show "Running Wild with Bear Grylls," putting his survival skills to the test in the national park.

Obama's first glimpse of a glacier on the trip came as Marine One whisked him about 45 minutes south of Anchorage to tiny Seward. As he flew past snow-capped peaks and sprawling forests, the sheet of ice emerged, snaking its way through mountains toward a teal-tinged lake.

His itinerary also includes the first presidential visit to the Alaska Arctic, which comes amid concerns that the US has ceded influence to Russia in strategic Arctic waters. Melting sea ice has been making way for shipping routes that never existed before, but the US has only two working icebreakers, compared with 40 in Russia's fleet — with another 11 on the way.

As he arrived for the boat tour, Obama said he was asking Congress to speed up construction of an additional icebreaker and plan for even more. Yet he offered few details about the timeline or costs, and the White House declined to elaborate.

"These icebreakers are an example of something that we need to get online now," Obama said. "They can't wait."

Though Obama's trip hasn't entailed new policy prescriptions or federal efforts to slow global warming, Obama has said the US is doing its part by pledging to cut carbon dioxide emissions up to 28% over the next decade. Obama set that target as America's commitment to a pending global climate treaty that Obama hopes will be a capstone to his environmental legacy.

Despite his efforts, the US isn't a shining example when it comes to greenhouse gases. Each American emits more than twice as much carbon dioxide as a Chinese and 10 times that of someone from India, Energy Department figures show. China, the US, and India are the world's top three polluters.

Here's a chart that from the Environmental Protection Agency that shows the continued uptick in global carbon-dioxide emissions from fossil fuels:

TrendsGlobalEmissions

SEE ALSO: Obama is renaming the tallest peak in North America — and Republicans are freaking out

Join the conversation about this story »

NOW WATCH: A devastating look at the California drought

There are now 4 swirling cyclones in the Pacific and the photo looks like a terrifying Van Gogh painting

$
0
0

Over the weekend, three Category 4 hurricanes were spotted surrounding Hawaii.

Now, a fourth storm has joined the historic bunch of tropical cyclones hanging out in the Pacific. 

4stormsgoes9115labeled

Tropical Depression 14E started forming on August 31, and by Wednesday had winds of about 35 miles per hour.

A tropical depression is a low pressure area inside thunderstorms with winds lower than 39 miles per hour. If a tropical depression picks up enough wind speed, it becomes a tropical storm.

Luckily, none of the storms have made landfall, and most appear to be winding down with the exception of this new tropical depression.

Kilo, which started out as a hurricane, moved far enough west over the International Date Line to earn the name Typhoon Kilo. As of Wednesday, it had sustained winds around 100 miles per hour, decreasing to a Category 2 storm.

Here's what Kilo looked like when it passed over the International Date Line as a Category 3 cyclone on Tuesday.

kilo

Ignacio has since been downgraded to a tropical storm. As of Wednesday morning, the storm had sustained winds of 70 miles per hour (just short of the Category 1 threshold), and was moving north, away from Hawaii. Here's a closeup of Ignacio from Tuesday.

ignacio goes 9115

Jimena is still a Category 2 hurricane, with winds of 115 as of Wednesday morning. The cyclone is headed northwest, but currently doesn't look like it will run into Hawaii.

The whole thing kind of looks like a scary Vincent van Gogh painting of "Starry Night."

Van Gogh Starry Night

Fortunately the storms shouldn't cause too much trouble, but if you want to see the worst case scenario scientists have put together, check out these storms that have been ominously called "Gray Swans."

Keep on swirlin', storms!

storms smaller

RELATED: Something historic is happening with hurricanes in the Pacific Ocean — and it could mean trouble

UP NEXT: Shocking map shows what a 'gray swan' hurricane could do to Tampa

Join the conversation about this story »

NOW WATCH: New aerial footage shows aftermath of explosion in China


Obama's breathtaking Alaska Instagram photos reveal something ominous

$
0
0

President Barack Obama is on a three-day trip to Alaska to bring attention to climate change, and his pictures on the White House Instagram account give us a glimpse of the Last Frontier's stunning natural beauty.

A spectacular end to day two in Alaska. -bo

A photo posted by The White House (@whitehouse) on Sep 1, 2015 at 11:51pm PDT on

Obama is the first sitting president to visit the Alaskan Arctic. He kicked off his trip Monday with a speech about how global warming is a growing crisis and Alaskans are already feeling its effects.

If this continues, "We will condemn our children to a planet beyond their capacity to repair," he said in the speech.

Here's a pic of Alaska's appropriately named Exit Glacier. The glacier has retreated more than 6,500 feet between 1815 and 1996 — about 43 feet per year, according to the National Park Service. In fact, the amount of water that has melted off Alaska's glaciers over the past 50 years would fill a billion Olympic-size swimming pools.

We need to make sure our grandkids can see this. -bo

A photo posted by The White House (@whitehouse) on Sep 1, 2015 at 5:51pm PDT on

The president took a selfie with this sign, one of many near Exit Glacier that show how much it has receded over time.

"The impacts of climate change are real, and the people of Alaska are living with them every day," he wrote in the caption.

The president snapped a few aerial shots from Marine One near Seward, Alaska:

Here's another:

Spectacular view from Marine One as we near Seward. -bo

A photo posted by The White House (@whitehouse) on Sep 1, 2015 at 4:49pm PDT on

And one more:

One more from Marine One. -bo

A photo posted by The White House (@whitehouse) on Sep 1, 2015 at 4:51pm PDT on

As Mashable points out, Obama is a "#nofilter kind of guy."

Obama showed off his witty sense of humor in this post with British TV adventurer Bear Grylls, on whose show "Running Wild with Bear Grylls" the president will make an appearance, according to NBC.

There's even a petition going around begging the president to drink his own urine.

Glad this was the only Bear I met in the park. -bo

A photo posted by The White House (@whitehouse) on Sep 1, 2015 at 10:39pm PDT on

Earlier this year, Obama launched the Every Kid in a Park initiative, which lets every fourth-grader across the country visit our public lands for free during the 2015-16 school year.

Here he is posing with a young girl he met at Kenai Fjords National Park:

You can watch the full YouTube video of Obama's Alaska trip, posted by the White House, below:

SEE ALSO: This photo of Obama staring down a melting glacier is a dramatic sounding of the alarm on climate change

NOW READ: President Obama is set to run wild with Bear Grylls for an episode on NBC

Join the conversation about this story »

NOW WATCH: Animated map of what Earth would look like if all the ice melted

The UN is frustrated with 'snail's pace' progress on climate change

$
0
0

Christiana Figueres, Executive Secretary of the United Nations Framework Convention on Climate Change (UNFCCC), listens during a news conference after a week long preparatory meeting at the U.N. in Geneva February 13, 2015. REUTERS/Denis Balibouse

The "snail's pace" of progress on an accord to combat climate change caused widening unease at U.N. negotiations on Friday, with time fast running out before a Paris summit at which a global agreement is due to be reached.

The United Nations said the talks were still on track for that meeting in December following a week of discussions in Bonn to clarify options about everything from cuts in greenhouse gas emissions to ways to raise aid to poor nations.

"We all would want to see this baby born," Christiana Figueres, head of the U.N. Climate Change Secretariat, said of a U.N. agreement meant to chart ways to fight global warming beyond 2020.

"Of course we are all impatient, of course we are all frustrated," she told a news conference, adding: "We are ... on track with the Paris agreement."

U.N. Secretary-General Ban Ki-moon has in recent weeks criticized the negotiations as progressing at a "snail's pace".

Ahmed Djoghlaf, an Algerian who co-chairs the Bonn meetings, bristled at the description. He said Ban's office was on the 38th floor of the U.N. building in New York. From so high up "you don’t see what is going on in the basement," he said.

"We are making progress... We will be on time in Paris," he told a news conference.

But there is just one more formal five-day session left, in October, before the summit. A group of protesters in Bonn, urging faster action, sang "It's the final countdown".

Ban Ki-moon Secretary General United Nations

Senior officials said they had successfully clarified many options in the 83-page draft text, while leaving hard choices for the Paris summit in December. An updated draft would be prepared for early October.

Overriding choices, for instance, range from a goal of phasing out fossil fuels by 2050 favored by many developing nations to no deadline at all, favored by many OPEC states.

Some environmental groups said negotiators should make the tough decisions now. "Governments have failed us in Bonn," said Martin Kaiser of Greenpeace, saying that negotiators should set a goal to phase out fossil fuels by mid-century.

"It’s getting very clear that we will get a deal in Paris," said Mohamed Adow of Christian Aid. But he said it risked being too weak to confront widening problems of droughts, floods and rising seas.

Many delegates expressed guarded confidence.

"I'm confident we can bridge the gaps, but that takes time and, unfortunately, time is not on our side," said Amjad Abdulla of the Maldives and chief negotiator for the alliance of Small Island States which fears storms and rising ocean levels.

 (Reporting By Alister Doyle; editing by John Stonestreet)

Join the conversation about this story »

The 16 best science movies and shows on Netflix

$
0
0

life still

Labor Day weekend is here.

That means a retreat to the woods or a beach for some of us. For others it's the perfect moment to hit the couch and gorge ourselves on streaming cinematic adventures (when we're not grilling hot dogs, of course).

The good news is there's an incredible variety of compelling science-and-nature-oriented documentaries and series streaming on Netflix right now — from shows that unmask the mysterious depths of the ocean to documentary films that tell harrowing tales of mountaineers risking their lives.

But there's a dark side to all of that choice: It's a lot to choose from.

So I polled the Tech Insider team and came up with 16 of the best science documentaries, series, and feature-length films to watch online — a list including classics and newcomers alike.

Here are our favorites, listed in no particular order:

"Blackfish" (2013)

What it's about: This film highlights issues with the sea park industry through the tale of Tilikum, a killer whale in captivity at SeaWorld in Orlando, Florida. Tilikum has killed several people while living in the park. 

Why you should see it: Sea parks are extremely popular family destinations. This documentary opens your eyes to the troubles with keeping wild animals in captivity through shocking footage and emotional interviews, highlighting potential issues of animal cruelty and abuse when using highly intelligent animals as entertainment. Sea parks make billions of dollars off of keeping animals captive, often at the expense of the health and well-being of its animals. [Click to watch]



"Particle Fever" (2013)

What it's about: This documentary follows six scientists as they prepare for one of the biggest and most expensive experiments in history: recreating conditions from the Big Bang with the launch of the Large Hadron Collider in Europe. Their aim is to unravel the mysteries of the universe and the origins of matter.

Why you should see it: "Physics is often considered a forbiddingly dense subject, but 'Particle Fever' gives you a window into physics without breaking your brain. It documents the discovery of the famous Higgs boson particle that many physicists think holds the key to understanding the universe. Instead of getting bogged down with the complexities of particle physics, the film focuses more on the human drama of the discovery, and how it could change our understanding of the world around us."—Kelly Dickerson, science reporter at Tech Insider. [Click to watch.]



"Planet Earth" (2006)

What it's about: Actress Sigourney Weaver narrates this dazzling high-definition documentary series, which offers incredible footage of the world's breathtaking natural wonders — oceans, deserts, ice caps, and more. (Note: This is the US version of the BBC production.)

Why you should see it: "Planet Earth is why HDTV was invented. It has some of the most amazing visuals ever. And then when you learn to the depths at which they went to get the footage, such as camping out for days on end in camouflage, you have such a great appreciation that the people behind it. They truly want to give you a one of a kind experience," said Sam Rega, producer and director for Business Insider Films. 

"You've never seen nature like this. I'd argue that Planet Earth, with its high definition footage that took five years to shoot, changed the way nature documentaries were made — all for the better.

"It's a journey around the globe to the incredibly varied environments that make up our world. Every episode shows you things you've never seen: caves with their eyeless creatures, jungles brimming with life, and to the mountains which tower over us. Plus, David Attenborough."—Kevin Loria, science reporter at Tech Insider. [Click to watch.]



See the rest of the story at Business Insider

NOW WATCH: What US cities will look like under 25 feet of water

This is how many trees are left on the planet

$
0
0

A woman walks past trees reflected on a lake in front of a construction site of a residential compound on a hazy day in Wuhan, Hubei province March 6, 2015.  REUTERS/Stringer

New research has provided the most accurate count yet for the number of trees on Earth: 3.04 trillion.

The finding, with 95% accuracy, is about eight times more than previous estimates, but suggests that the number of trees has plummeted 46% since the dawn of human civilization 11,000 years ago – with the number once being above six trillion.

The study, published in the journal Nature, was conducted by an international team of researchers and led by Yale University.

The tree count was made using a combination of satellite imagery and more than 400,000 ground measurements, with the researchers defining a tree as “a plant with woody stems larger than 10 centimeters [four inches] diameter at breast height.”

In a press conference, lead author Thomas Crowther, a postdoctoral fellow at the Yale School of Forestry & Environmental Studies (F&ES), noted that previous studies only looked at plants larger than 50 centimeters (20 inches) in diameter.

Nonetheless, the latest findings could help map endangered species, show how water is recycled and reveal how much carbon dioxide is being absorbed from the atmosphere.

Perhaps most significantly, the study highlights the dramatic effect humanity is having on the natural world. 

"We’ve nearly halved the number of trees on the planet, and we’ve seen the impacts on climate and human health as a result," Crowther said in a statement. “This study highlights how much more effort is needed if we are to restore healthy forests worldwide.”

Data from the study could be useful in working out how much carbon is stored in terrestrial vegetation. "In the study, we show that there is a positive relationship between the amount of trees in an area and the amount of carbon storage," Crowther told IFLScience, but he noted that "this relationship was not strong because the highest densities of trees are often dominated by a large number of small trees that don’t store much carbon."

Breaking down the findings, 1.39 trillion trees were in tropical and subtropical forests, 0.74 trillion in boreal regions and 0.61 trillion in temperate regions. Thanks to the data on the ground, the researchers were able to measure the density of trees in forests around the world to come to their accurate figures.

The study looked at tree levels over the last 12 years, and found that there was a gross loss of more than 15 billion trees a year, and a net loss of 10 billion when regrowth was taken into account. Crucially, humans were found to be "one of the dominant regulators of trees," Crowther said in the press conference. "The one consistent factor is the negative impact of humans."

Another outcome of the study was on campaigns to plant more trees, such as the UN's Billion Trees Campaign. According to the findings, planting one billion trees is just 1/3000th of the total number on Earth, suggesting greater efforts are needed to manage Earth’s ecosystem.

Overall, the message is clear: We are having a drastic effect on Earth’s ecosystem. There are currently 422 trees per person in the world but, if current trends continue, that will fall to 214 in 150 years. It’s a sobering thought to realise just how much of an impact we are having on this relatively tiny ball of rock we call a planet.

Join the conversation about this story »

NOW WATCH: The giant-sized wings on butterflies have nothing to do with flying

The 24 best companies to invest in if you care about not destroying earth

$
0
0

A general view of the giant polar bear puppet outside the Shell Building on September 2, 2015 in London, England. As part of the protest, 64 activists and puppeteers manoeuvred a giant polar bear puppet the size of a double decker bus to rest just metres away from Shell's front entrance. It's intended the polar bear titan will remain fixed there until Shell's Arctic drilling window ends later this month. (Photo by)

London-based startup ET Index is trying to encourage "green" investment by providing investors with carbon emission data and tracking, both for portfolios and individual companies.

The company tracks direct greenhouse gas emissions, as well as factoring in things like electricity consumption, supply chain, and other indirect emissions. 

ET Index has produced a live ranking of 800 biggest companies in the world, based on relative emissions and weighted to allow comparison of the biggest to the smallest on the list.

Each business is given an intensity score, which gives the tonnes of carbon dioxide equivalent produced per $1 million (£650,000) in revenue. The worst performer produces 62,120 tonnes per $1 million, the best just 910.

Check out the 24 best performers, with the lowest carbon emissions to revenue ratios.

24. St. Jude Medical, a US medical device maker

Tonnes of carbon emission per $1 million revenue: 315

Sector: Medical technology

Based: US

Value: $19.6 billion (£12.8 billion)

 



23. Eisai, a Japanese pharmaceuticals company

Tonnes of carbon emission per $1 million revenue: 315

Sector: Pharmaceuticals

Based: Japan

Value: $12.2 billion (£7.9 billion)

 



22. Biogen, a US biotechnology company

Tonnes of carbon emission per $1 million revenue: 312

Sector: Biotechnology

Based: US

Value: $75.9 billion (£49.7 billion)

 



See the rest of the story at Business Insider

NOW WATCH: The cheapest new Ferrari money can buy is absolutely gorgeous

Viewing all 2972 articles
Browse latest View live


Latest Images