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80beats

Archive for the ‘Environment’ Category

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Panel Finds That Nearly All Invasive Chimp Research is Unnecessary; NIH Agrees

chimp

After seven months of deliberation, the US Institute of Medicine has released a report that marks a turning point in the use of chimpanzees, humanity’s closest relative, in medical research. An IOM panel found that chimpanzees were in the vast majority of cases no longer required for disease research and laid out three stringent rules against which all current and future chimp research should be judged. Within two hours, Francis Collins, the head of the National Institutes of Health, announced he had accepted the group’s analysis and would set up a committee to apply the rules to proposed and ongoing research projects funded by the NIH.

(more…)

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December 16th, 2011 Tags: chimpanzees, chimps, ethics, Francis Collins, hepatits C, lab animals, lab research, NIH
by Veronique Greenwood in Environment, Health & Medicine | 6 Comments » | RSS feed | Trackback >

Wild Monkeys To Monitor Radiation Levels In Japan

How do you do to measure radiation levels in the hard-to-reach forests near Japan’s Fukushima Daiichi plant? Why, fit wild monkeys with radiation sensors, of course! Researcher Takayuki Takahashi tells CNN that his team plans to fit three monkeys in early 2012 with collars that measure radiation, as well as GPS units that record location and distance from the ground. The researchers plan to leave the monitors in place for about a month, before detaching them via remote control and picking up them up to retrieve their stored data.

(more…)

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December 15th, 2011 Tags: Fukushima Daiichi, japan, monkeys, radiation, radiation monitoring, wild monkeys
by Douglas Main in Environment, Technology | 5 Comments » | RSS feed | Trackback >

Twenty Years of Climate Meetings, Through the Eyes of a Veteran Journalist

The most important climate meeting of the year, the UN Framework Convention on Climate Change’s Convention of Parties in Durban, South Africa, has just concluded, with the US envoy “relieved” by the results, but developing countries frustrated by the failure of developed nations to take greater responsibility for emissions. At Nature News, Frank MacDonald, a veteran reporter who has attended nearly every Convention of Parties meeting since they began in 1992, recounts his experiences as a spectator on the edge of the climate poker game:

Nearly 20 years ago, as I wandered as a newspaper reporter from tent to tent at the Global Forum in Rio de Janeiro’s Flamingo Park, with young, idealistic environmental activists milling about, I couldn’t help thinking of Dale Arden’s line from the film Flash Gordon, a decade before: “Flash, Flash, I love you, but we only have 14 hours to save the Earth!”

Brazil’s 1992 Earth Summit was in full swing, and when it closed it even seemed that we would manage to save the world from global warming, and species extinction too. After all, delegates at the United Nations Conference on Environment and Development — as it was officially known — had just adopted two conventions to stave off these threats.

Read more at Nature News.

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December 14th, 2011 Tags: climate change, COP17, Durban
by Veronique Greenwood in Environment | 11 Comments » | RSS feed | Trackback >

Japan Disaster Was Two Tsunamis Rolled into One


Satellite radar data showed two wave fronts combining into a doubly tall tsunami off the coast of Japan on March 11.

The tsunami that spawned by the 9.0 earthquake off Japan this March was a disaster of massive proportions, reaching heights of over 130 feet in some areas and traveling up to six miles inland in others. Scientists at NASA and Ohio State University have now found another factor, beyond the sheer strength of the quake, that made the tsunami so ferocious: It started out as two separate walls of waves that combined to form one taller, more powerful “merging tsunami.”

(more…)

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December 7th, 2011 Tags: earthquakes, japan, NASA, satellites, tsunamis
by Valerie Ross in Environment | 1 Comment » | RSS feed | Trackback >

After Tsunami, Japanese People Think Waves Are Less Dangerous. What?

earthquake
The wave that washed over the eastern coast of Japan was more than 130 feet high.

You would expect that a disaster of the magnitude of the Tohoku tsunami and earthquake, which killed 15,000 people and caused about $210 billion in property damage, would have people feeling more apt to evacuate when another killer wave approaches. But, strikingly, scientists who interviewed Japanese people a year before the event and afterwards found that the size of the waves they would think dangerous enough to flee had grown. As Adam Mann writes at Wired, people had stopped recognizing the height at which a wave becomes dangerous:

(more…)

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December 6th, 2011 Tags: anchoring, behavioral economics, earthquake, japan, natural disasters, safety, Tohoku Earthquake, tsunami
by Veronique Greenwood in Environment | 5 Comments » | RSS feed | Trackback >

Atmospheric Remnants of Nuclear Tests Reveal Antarctica’s Tiny “Old-Growth Forests”

Ceratodon purpureusHardy Antarctic moss.

Ah, Antarctica. A vast expanse of ice, interrupted by mountains, ice… and more ice (with the occasional penguin). But in the East of the continent and on the Windmill Islands near Australia’s Casey research station, bare ground can actually be seen during summer months. Here Antarctica’s endemic plants dwell: lichens, terrestrial algae, and mosses. These smatterings of bryophytes are amongst the hardiest flora in the world, providing a home for a variety of minute life. They survive being covered in snow most of the year, only growing briefly during the summer months, watered by snowmelt. Except for in-person observations made over the last two decades, little definitive was known about these oases of diversity, like their age or how they might respond to changes in climate.

But now, some of the moss’s secrets are out. A recent study in the journal Global Change Biology found that some of these plants must be more than a century old, and a few may even be thousands of years old, said researcher  and study author Sharon Robinson via email. On average these mosses grow at the glacial speed of 1 millimeter per year—and some of the turfs are meters thick. That means many of these unassuming mossy carpets were there when humans first made it to the continent a century ago—and likely well before. “These mosses are effectively the old growth forests of Antarctica—in miniature,” Robinson said.

(more…)

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November 30th, 2011 Tags: Antarctic, Antarctic climate, antarctic moss, Antarctica, carbon-14, moss, tree rings
by Douglas Main in Environment, Living World | 4 Comments » | RSS feed | Trackback >

Study: Switch to Farming Shortened Jaws, Giving Us Crowded & Crooked Teeth

What’s the News: Parents going broke to pay for their offspring’s braces and orthodontistry can finally blame somebody besides their mildly malformed children: our farmer ancestors. A study published this week in the Proceedings of the National Academy of Sciences found that people living in subsistence farming communities around the world have shorter, wider jaws than those in hunting and gathering societies. This leaves less room for teeth, which have changed little in size or abundance over human history—and may help explain why crooked choppers and a need for orthodontia are so common, study author Noreen von Cramon-Taubadel tells the BBC. ”I have had four of my pre-molars pulled and that is the only reason that my teeth fit in my mouth,” she says.

(more…)

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November 23rd, 2011 Tags: agriculture, ancestors, braces, hunter-gatherer, jawbone, mandibles, orthodontistry, PNAS, teeth
by Douglas Main in Environment, Human Origins, Top Posts | 3 Comments » | RSS feed | Trackback >

Mongolia to Cool Capital City During the Summer with a Giant Ice Cube

ice cube
A naled, or aufeis, in the flesh. Er, ice.

It sounds like science fiction, but, like so many science fiction-ish ideas in the age of radical adaption to climate change, it’s real: Mongolia is launching a $750,000 geoengineering project to freeze vast quantities of the Tuul River in order to cool its capital city of Ulan Bataar during the sweltering summer, and to provide drinking water as the ice melts, as well. While specifics about exactly how the cooling will work are scarce, details about the freezing process are not, as it will mimic a natural process that already occurs on rivers in the north.

(more…)

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November 18th, 2011 Tags: aufeis, climate change, geoengineering, glaciers, ice, Mongolia, naled, rivers
by Veronique Greenwood in Environment | 4 Comments » | RSS feed | Trackback >

When Data is Beautiful: A Collection of Colorful Volcano Maps

crater lakeThe Crater Lake caldera shows a particularly striking pattern of lava flows.

Sometimes, the results of science can be a little cryptic. But other times, data can be as beautiful as it is information rich. Betsy Mason over at Wired Science has a gallery of geological maps of volcanoes that demonstrate exactly that, with a rainbow of colors indicating different types of rock and lava flows from millennia of eruptions. Which mountain is your favorite?

Image courtesy of USGS

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November 17th, 2011 Tags: Crater Lake, geology, volcano
by Veronique Greenwood in Environment | No Comments » | RSS feed | Trackback >

What Stands Between You and the World’s Most Expensive Burger

meat
You can dream, but…lab-grown processed meats, let alone steak, are a very
long way off still.

Part of what stands between you and a lab-grown meat patty (a perennial source of fascination around here) is your gag reflex: the pale strips of cultured muscle cells that are currently the top contender for Petri-dish burgerdom look like scraps of mold, and they must be “exercised”—stretched between Velcro tabs—to strengthen and gain meat-ish texture. A patty made from them will be a hand-assembled stack of about 3,000 scraps, and in order to give the stuff color and iron, the lead scientist of the project opined to Reuters, they might need to soak it in lab-grown blood. Gah.

Still, factory farming ain’t pretty either, and the sheer amount of land and other resources we dedicate to meat production can be enough to make you gag as well.

(more…)

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November 15th, 2011 Tags: cultured meat, factory farming, lab-grown meat, Petri-dish meat, tissue culture
by Veronique Greenwood in Environment, Health & Medicine, Living World | 12 Comments » | RSS feed | Trackback >

CA Birds Are Getting Bigger; PA Birds Are Getting Smaller

California birds are getting slightly bigger, according to a study published in Global Change Biology in which researchers measured and weighed 33,000 birds over the past 40 years. The increases were small, but significant: in the last 25 years robins have grown 0.2 ounces in mass and 1/8th of an inch in wing length, for example. But the finding runs counter to the only other long-term study measuring avian size in North America, which found that birds in Pennsylvania have shrunk slightly over recent decades. And it seems to disagree with other recent suggestions that animals may shrink in a warming world: Bergmann’s rule holds that animals generally get bigger as they get farther away from the equator, because larger animals are better able to retain heat.

(more…)

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November 9th, 2011 Tags: Bergmann's rule, birds, california, climate change, shrinking birds, size and climate change
by Douglas Main in Environment, Living World | 5 Comments » | RSS feed | Trackback >

As Permafrost Melts, Methane-Munching Soil Bacteria Come to Life

microbes
There’s a lot going on in Arctic permafrost as it melts and soil bacteria become more active. A new study explores how these bacteria may help or hinder our efforts to control the greenhouse gasses in the atmosphere.

What’s the News: Melting permafrost in a warming world could mean lots of greenhouses gasses, especially methane, released into the atmosphere. But it also means an unusual community of soil bacteria coming out of hibernation, so to speak. A new study looks at what those permafrost microbes do, exactly, as their environment warms up.

(more…)

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November 7th, 2011 Tags: carbon dioxide, climate change, global warming, melting permafrost, metagenome sequencing, methane, nitrous oxide, soil bacteria
by Veronique Greenwood in Environment, Living World, Top Posts | 10 Comments » | RSS feed | Trackback >

Chinese Elite Breathe Cleaner Air Than Their Countrymen

Chinese smogBeijing smog as seen from the China World Hotel, March 2003.

While top Chinese government officials have many advantages in terms of wealth, education, and status compared to most of their countrymen, the consolation remained that the rich had to breathe the same polluted air as the poor in smog-ridden cities like Beijing. But as a story in the New York Times points out, that may not be entirely accurate:

(more…)

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November 7th, 2011 Tags: air purifiers, beijing air quality, China, chinese air quality, particulate matter, smog
by Douglas Main in Environment, Health & Medicine | 7 Comments » | RSS feed | Trackback >

Low-Tech Vikings May Have Used Mineral With Funky Optics to Reach New World

What’s the news: Viking legend has it that sailors could hold up crystal sunstones to the sky to help them find their way. Turns out the legend could be true. In a study published this week in the journal Proceedings of the Royal Society B, a team of researchers found that a type of crystal called an Icelandic spar commonly found in that country could accurately reveal the position of the sun in cloudy or near-dark conditions. (more…)

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November 4th, 2011 Tags: calcite, calcium carbonate, icelandic spar, oceanic navigation, shipwrecks, sunstone, viking navigation, viking sunstone, Vikings
by Douglas Main in Environment, Physics & Math, Technology, Top Posts | 11 Comments » | RSS feed | Trackback >

Vampire-like Predatory Bacteria Could Become A Living Antibiotic


The bacterium Micavibrio aeruginosavorus (yellow), leeching
on a Pseudomonas aeruginosa bacterium (purple).

What’s the news: If bacteria had blood, the predatory microbe Micavibrio aeruginosavorus would essentially be a vampire: it subsists by hunting down other bugs, attaching to them, and sucking their life out. For the first time, researchers have sequenced the genome of this strange microorganism, which was first identified decades ago in sewage water. The sequence will help better understand the unique bacterium, which has potential to be used as a “living antibiotic” due to its ability to attack drug-resistant biofilms and its apparent fondness for dining on pathogens.

(more…)

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November 2nd, 2011 Tags: antibiotic resistance, antibiotics, bacteria, genome sequence, genomics, Pseudomonas aeruginosa
by Douglas Main in Environment, Health & Medicine, Living World, Top Posts | 10 Comments » | RSS feed | Trackback >

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      80beats is DISCOVER's news aggregator, weaving together the choicest tidbits from the best articles on the day's most compelling topics.

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