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E.g., 12/13/2017
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Your search has returned 103 articles:
  • Feature

    What the Pliocene epoch can teach us about future warming on Earth

    Imagine a world where the polar ice sheets are melting, sea level is rising and the atmosphere is stuffed with about 400 parts per million of carbon dioxide. Sound familiar? It should. We’re living it. But the description also matches Earth a little over 3 million years ago, in the middle of the geologic epoch known as the Pliocene.

    To understand how our planet might respond as global...

    11/28/2017 - 08:00 Earth, Climate
  • Scicurious

    On social media, privacy is no longer a personal choice

    Some people might think that online privacy is a, well, private matter. If you don’t want your information getting out online, don’t put it on social media. Simple, right?

    But keeping your information private isn’t just about your own choices. It’s about your friends’ choices, too. Results from a study of a now-defunct social media site show that the inhabitants of the digital age may...

    08/24/2017 - 15:30 Science & Society
  • Feature

    DNA evidence is rewriting domestication origin stories

    One lab full of rats looks pretty much the same as another. But visiting a lab in Siberia, geneticist Alex Cagan can distinguish rats bred to be tame from those bred to be aggressive as soon as he opens the lab door.

    “It’s a completely different response immediately,” he says. All of the tame rats “come to the front of the cage very inquisitively.” The aggressive rats scurry to the backs...

    07/06/2017 - 12:00 Genetics, Animals
  • News in Brief

    Zika virus ‘spillback’ into primates raises risk of future human outbreaks

    WASHINGTON — Scientists usually worry that animal diseases could spill over into humans. But “spillback” of Zika virus into monkeys in South America could be just as dangerous.

    In areas where Zika infections are prevalent among humans and mosquitoes are abundant, the virus may be transmitted to wild primates, disease ecologist Barbara Han said February 6 at the American Society for...

    02/08/2017 - 14:00 Ecology, Microbiology
  • Feature

    Year in review: Gravitational waves offer new cosmic views

    The secrets gleaned from the universe’s most mysterious giants are incongruously subtle when witnessed at Earth: Detectors budge by a tiny fraction of a proton’s breadth, outputting a feeble, birdlike chirp.

    For centuries, astronomers have peered out into the universe almost exclusively by observing its light. But 2016’s announcement of the first detection of gravitational waves,...

    12/14/2016 - 07:41 Physics, Astronomy
  • Screentime

    Website tests predictive powers of the hive mind

    As the saying goes, “It’s difficult to make predictions, especially about the future.” The website Metaculus.com aims to make this challenging task easier by harnessing collective wisdom.

    Metaculus solicits answers to questions about the future — on topics spanning science, politics and economics — and combines these predictions to infer the likely outcomes. Will 2016 be the hottest year...

    07/26/2016 - 06:00 Numbers, Science & Society
  • News

    Scientists wrestle with possibility of second Zika-spreading mosquito

    Sure, mosquitoes spread Zika virus. Scientists have already identified the yellow fever mosquito (Aedes aegypti) as a major spreader in the Americas of Zika and its risk of birth defects and possible paralysis. But Ae. aegypti may not be the only culprit. Recent evidence raises concerns that a relative, the Asian tiger mosquito (Ae. albopictus), might also play a role.

    A Mexican lab, for...

    05/16/2016 - 16:30 Biomedicine, Animals
  • News in Brief

    Mercury’s stunning landscape mapped

    View animation

    Mercury has never looked better. Volcanic plains, craters, mountains and valleys are showcased in the first complete topographic map of the innermost planet, released May 6.

    Stitched together from over 100,000 images taken by NASA’s now-defunct MESSENGER spacecraft, the global catalog of landscapes provide data that researchers can use to better understand the...

    05/10/2016 - 05:30 Planetary Science
  • News

    Evidence conflicts on iron’s role in Parkinson’s disease

    Iron, says aging expert Naftali Raz, is like the Force. It can be good or bad, depending on the context. When that context is the human brain, though, scientists wrangle over whether iron is a dark force for evil or a bright source of support.

    Some iron is absolutely essential for the brain. On that, scientists agree. But recent studies suggest to some researchers that too much iron, and...

    05/02/2016 - 09:00 Neuroscience, Biomedicine, Health
  • News in Brief

    New sky map charts previously unknown gamma-ray sources

    SALT LAKE CITY — A new map of the sky charts the origins of some of the highest energy photons ever detected. Researchers from the High-Altitude Water Cherenkov Observatory released their first year of observations of gamma rays, ultrahigh-energy light particles blasted in our direction from some of the most extreme environments in the universe.

    The researchers found 40 gamma-ray sources...

    04/19/2016 - 14:31 Cosmology, Physics