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E.g., 03/21/2018
E.g., 03/21/2018
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  • viruses
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Your search has returned 110009 articles:
  • Science Visualized

    Meet the giants among viruses

    For decades, the name “virus” meant small and simple. Not anymore. Meet the giants.

    Today, scientists are finding ever bigger viruses that pack impressive amounts of genetic material. The era of the giant virus began in 2003 with the discovery of the first Mimivirus (SN: 5/23/09, p. 9). The viral titan is about 750 nanometers across with a genetic pantry boasting around 1.2 million base...

    03/21/2018 - 07:00 Microbiology
  • News

    5 things we’ve learned about Saturn since Cassini died

    THE WOODLANDS, Texas — It’s been six months since NASA’s Cassini spacecraft plunged to its doom in the atmosphere of Saturn, but scientists didn’t spend much time mourning. They got busy, analyzing the spacecraft’s final data.

    The Cassini mission ended September 15, 2017, after more than 13 years orbiting Saturn (SN Online: 9/15/17). The spacecraft’s final 22 orbits, dubbed the Grand...

    03/20/2018 - 15:30 Planetary Science, Astronomy
  • News

    How obesity makes it harder to taste

    As mice plumped up on a high-fat diet, some of their taste buds vanished. This disappearing act could explain why some people with obesity seem to have a weakened sense of taste, which may compel them to eat more.

    Compared with siblings that were fed normal mouse chow, mice given high-fat meals lost about 25 percent of their taste buds over eight weeks. Buds went missing because mature...

    03/20/2018 - 14:00 Health, Nutrition
  • The Science Life

    Kids are starting to picture scientists as women

    Ask a classroom of children to draw a scientist, and you’ll see plenty of Crayola-colored lab coats, goggles and bubbling beakers. That image hasn’t changed much since the 1960s. But the person wearing the lab coat is shifting.

    A new analysis finds that more female scientists have appeared in kids’ drawings in recent decades — going from nearly nonexistent in the 1960s to about a third...

    03/20/2018 - 11:27 Science & Society
  • Science Ticker

    First pedestrian death from a self-driving car fuels safety debate

    The first known pedestrian fatality involving a fully autonomous self-driving car will most likely raise questions about the vehicles’ safety.

    But “until we know what happened, we can’t really know what this incident means” for the future of self-driving vehicles, says Philip Koopman, a robotics safety expert at Carnegie Mellon University in Pittsburgh. Only when we know more about the...

    03/19/2018 - 18:24 Technology, Artificial Intelligence, Science & Society
  • News

    Some TRAPPIST-1 planets may be water worlds

    There’s so much water on some of TRAPPIST-1’s seven Earth-sized planets that any life lurking there might be difficult to detect.

    New estimates of the makeup of these potentially habitable worlds suggests that two of them are more than half water, by mass, researchers report March 19 in Nature Astronomy. Earth, by comparison, is less than 0.1 percent water.

    TRAPPIST-1’s planets are...

    03/19/2018 - 17:53 Planetary Science
  • News

    Tree rings tell tale of drought in Mongolia over the last 2,000 years

    A new analysis is shedding light on drought in Mongolia, both past and future.

    By studying the rings of semifossilized trees, researchers constructed a climate history for the semiarid Asian nation spanning the last 2,060 years — going 1,000 years further back than previous studies.

    It was suspected that a harsh drought from about 2000 to 2010 that killed tens of thousands of...

    03/19/2018 - 10:26 Climate, Earth
  • Television

    Will Smith narrates ‘One Strange Rock,’ but astronauts are the real stars

    View the trailer

    “The strangest place in the whole universe might just be right here.” So says actor Will Smith, narrating the opening moments of a new documentary series about the wonderful unlikeliness of our own planet, Earth.

    One Strange Rock, premiering March 26 on the National Geographic Channel, is itself a peculiar and unlikely creation. Executive produced by Academy Award–...

    03/18/2018 - 07:00 Earth, Astronomy, Science & Society
  • Rethink

    Inked mice hint at how tattoos persist in people

    Tattoos may have staying power because of a hand off between generations of immune cells known as macrophages, say a group of French researchers.

    If true, this would overturn notions that tattoo ink persists in connective tissue or in long-lasting macrophages.

    Immunologist Sandrine Henri of the Immunology Center of Marseille-Luminy, in France, and colleagues tattooed mice tails...

    03/16/2018 - 16:22 Microbiology, Immune Science
  • Science & the Public

    What we can and can’t say about Arctic warming and U.S. winters

    It certainly feels like the northeastern United States is getting snowier.

    In the first two weeks of March, three winter storms slammed into the northeast corridor from Washington, D.C., to Boston. Over the last decade, a flurry of extreme winter storms has struck the region, giving birth to clever portmanteau names such as Snowpocalypse (2009), Snowmageddon (2010) and Snowzilla (2016...

    03/16/2018 - 09:00 Science & Society, Climate