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科学美国人60秒:Greenland's Meltwater May Fertilize Fjords with Phosphorus
The massive ice sheet topping Greenland is losing nearly 300 billion tons a year to melting, according to NASA estimates. And all that meltwater means rising seas. But it's also d
科学美国人2016-02-18-
科学美国人60秒:Elephant Ivory DNA Reveals Poaching Hotspots
“There are about 50,000 elephants a year being killed right now with only about 450,000 left in Africa.”Samuel Wasser, director of the Center for Conservation Biology a
科学美国人2016-02-18 -
科学美国人60秒:Lizard Picks Best Color--to Stand against
Chameleons have it easy. If they need to hide from a predator they just change their appearance, and disappear against whatever they happen to be standing on. Surrounded by leaves?
科学美国人2016-02-17 -
科学美国人60秒:Gut Microbes Lessen Mice Malarial Malaise
Malaria infection begins when a mosquito injects the Plasmodium parasite into the blood. But getting sick is not a certain outcome. "The vast majority of people really only develop
科学美国人2016-02-17 -
科学美国人60秒:Giant Bird Driven Extinct by Egg-Eating Humans
Extinction. When species go bye-bye forever, we usually blame things like climate change, volcanic eruption or asteroid impact. But for the giant flightless birds that once roamed
科学美国人2016-02-16 -
科学美国人60秒:Climate Change Most Affects Nations That Didn't Produce It
“Less than 4 percent of countries are responsible for over half of the world’s greenhouse gas emissions.
科学美国人2016-02-16
Glenn Althor, of the University of Queensland.
“This me -
科学美国人60秒:Super Bowl Sunday's Food Needs Work
It’s nearly game day and, if you’re a fan, you’ve already set aside your roomiest sweatpants and your own personal Family-size bag of Nacho Cheese Doritos. But if
科学美国人2016-02-15 -
科学美国人60秒:Bear Gut Microbes Help Prep Hibernation
Does a bear produce feces in the woods? And do enterprising researchers then scoop that poop to analyze its microbial composition? You bet they do! And what they find is that the u
科学美国人2016-02-15 -
科学美国人60秒:Seed-Scattering Birds May Help Trees Cope with Climate Change
The tree people in the Lord of the Rings—the Ents—can get around by walking. But for real trees, well, it's harder to uproot. "Because it's a sessile organism, litera
科学美国人2016-02-05 -
科学美国人60秒:Plastic Pollution Perturbs Oyster Offspring
As many as 12 million tons of plastic waste end up in the world's oceans every year, according to a 2015 estimate in the journal Science. Over time, wind and waves grind and chew
科学美国人2016-02-04 -
科学美国人60秒:Quick Test Could Tell If a Patient Needs Antibiotics
When patients show up in a hospital with a respiratory illness, they’re usually given an antibiotic, which do not work against viral infections. Even though most of these res
科学美国人2016-02-04 -
科学美国人60秒:Antioxidant Use Still Small Mixed Bag
Are you gobbling up antioxidants as part of your diet and nutrition regimen? The benefits may be, well…
科学美国人2016-02-03
“It seems surprising, but even after several decades we don&rs -
科学美国人60秒:Sweet Song Gives Away New Bird Species
That, of course, is the sound of the Himalayan forest thrush. And that sound was a clue to field researchers that they might have a new species of bird on their hands. Even though
科学美国人2016-02-02 -
科学美国人60秒:Suicide Differences by Region Related to Gun Availability
“One of the things we know for sure in the United States is that a gun in the home increases the likelihood that someone in the home will die a violent death—from gun a
科学美国人2016-02-01 -
科学美国人60秒:Musical Pitch Perception May Have Long Evolutionary History
The ability to distinguish between sounds of varying pitch makes people capable of producing and understanding speech and music. And the way we are able to process pitch has been t
科学美国人2016-01-29 -
科学美国人60秒:Quick Test Could Tell If Patient Needs Antibiotics
When patients show up in a hospital with a respiratory illness, they’re usually given an antibiotic, which do not work against viral infections. Even though most of these res
科学美国人2016-01-28 -
科学美国人60秒:Pluto Killer Thinks He Has New Ninth Planet
“All those people who are mad that Pluto is no longer a planet can be thrilled to know that there’s a real planet out there still to be found.” Caltech planetary
科学美国人2016-01-27 -
科学美国人60秒:Sharks Head Straight Home by Smell
Some sea creatures can find their way through thousands of miles of seemingly featureless oceans. Even more impressive is the route that they take. “Well, we’ve known
科学美国人2016-01-26 -
科学美国人60秒:Volcano Role in Dino Death Gets Mercury Boost
Sixty-five million years ago, a six-mile-wide asteroid crashed into what’s now Mexico. The impact upended Earth’s climate, driving up to three quarters of all species e
科学美国人2016-01-22 -
科学美国人60秒:Healthful Diet Switch Helps Even Late in Life
Let’s say your diet has been not so great. Maybe too much red meat, especially processed meat. Maybe too many sugary soft drinks. And maybe you’ve been eating like that
科学美国人2016-01-21 -
科学美国人60秒:Better Gut Microbiome Census through Computing
In recent years scientists have shown that the microbes that live in our guts play crucial roles in our lives. They’re involved in digestion, obesity, even mood. And a few ca
科学美国人2016-01-20 -
科学美国人60秒:Sociable Chimps Get Richer Gut Microbiomes
Chimpanzees. They’re notoriously social creatures. They snack together, snooze together and work hard to keep each other flea- and tick-free. But this simian intimacy does mo
科学美国人2016-01-19 -
科学美国人60秒:Mammoth Find Moves Humans in Arctic Back 10,000 Years
The word Siberia is almost a synonym for extreme cold. It’s hard enough to imagine living there today, but humans have been wandering the icy terrain for thousands of years.
科学美国人2016-01-18 -
科学美国人60秒:City Swans May Tolerate Humans Due to Gene Variant
Animals that live in the city are usually less wary of humans than their rural counterparts. Most people think the boldness comes from experience: since the majority of humans are
科学美国人2016-01-15 -
科学美国人60秒:Hippo Meat-Munching May Explain Their Anthrax Outbreaks
Hippopotamuses. People usually think of them as massive, lumbering hulks of plant-eating muscle. Reports do crop up of hippos snacking on crocs or chowing down on a drowned wildebe
科学美国人2016-01-14
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