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E.g., 04/28/2017
E.g., 04/28/2017
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  • Saturn's atmosphere
  • Mongolian horses
  • Zika virus
Your search has returned 109049 articles:
  • News in Brief

    Cassini’s ring dive offers first close-up of Saturn’s cloud tops

    Cassini has beamed back stunning images from the spacecraft’s daring dive between Saturn and its rings.

    The first closeup pictures of the planet’s atmosphere reveal peculiar threadlike clouds and puffy cumulus ones, plus the giant hurricane first spotted on Saturn in 2008 (SN: 11/8/08, p. 9). Released April 27, the images of Saturn’s cloud tops are a “big step forward” for understanding...

    04/27/2017 - 17:49 Planetary Science
  • News

    Ancient DNA bucks tale of how the horse was tamed

    DNA from 2,000-year-old stallions is helping rewrite the story of horse domestication.

    Ancient domesticated horses had much more genetic diversity than their present-day descendants do, researchers report in the April 28 Science. In particular, these ancient horses had many more varieties of Y chromosomes and fewer harmful mutations than horses do now. Previous studies based on the...

    04/27/2017 - 14:00 Genetics, Animals
  • News

    Zika hides out in body’s hard-to-reach spots

    Zika virus plays hard to get.  

    Weeks after the virus disappears from the bloodstream, it still lingers in the lymph nodes and the central nervous system of rhesus monkeys, researchers report online April 27 in Cell. That could help explain why Zika infection can cause neurological problems in both infants and adults.

    “Zika does stick around for a lot longer than we originally...

    04/27/2017 - 12:00 Biomedicine
  • Science Ticker

    How a mushroom gets its glow

    The enzyme that turns on the light for a glow-in-the-dark mushroom seems “promiscuous,” researchers say. But in a good way.

    Researchers from Brazil, Russia and Japan have worked out new details of how two Neonothopanus fungi shine softly green at night. The team had earlier figured out that the basic starting material for bioluminescence in these fungi is a compound called hispidin,...

    04/27/2017 - 09:00 Fungi, Chemistry
  • Science Visualized

    The scales of the ocellated lizard are surprisingly coordinated

    View the video

    A lizard’s intricately patterned skin follows rules like those used by a simple type of computer program.

    As the ocellated lizard (Timon lepidus) grows, it transforms from a drab, polka-dotted youngster to an emerald-flecked adult. Its scales first morph from white and brown to green and black. Then, as the animal ages, individual scales flip from black to green, or...

    04/27/2017 - 06:00 Animals, Biophysics
  • News

    First settlers reached Americas 130,000 years ago, study claims

    The New World was a surprisingly old destination for humans or our evolutionary relatives, say investigators of a controversial set of bones and stones.

    An unidentified Homo species used stone tools to crack apart mastodon bones, teeth and tusks approximately 130,700 years ago at a site near what’s now San Diego. This unsettling claim upending the scientific debate over the settling of...

    04/26/2017 - 13:00 Archaeology, Anthropology
  • Science Ticker

    Dog DNA study maps breeds across the world

    Mapping the relationships between different dog breeds is rough (get it?), but a team of scientists at the National Institutes of Health did just that using the DNA of 1,346 dogs from 161 breeds. Their analysis, which appears April 25 in Cell Reports, offers a lot to chew on.

    Here are five key findings from the work:

    Dogs were bred for specific jobs, and this shows in their genes.

    ...

    04/26/2017 - 11:30 Animals, Genetics
  • Growth Curve

    Long naps lead to less night sleep for toddlers

    Like most moms and dads, my time in the post-baby throes of sleep deprivation is a hazy memory. But I do remember feeling instant rage upon hearing a popular piece of advice for how to get my little one some shut-eye: “sleep begets sleep.” The rule’s reasoning is unassailable: To get some sleep, my baby just had to get some sleep. Oh. So helpful. Thank you, lady in the post office and entire...

    04/26/2017 - 07:00 Human Development, Health
  • News

    ‘Fossil’ groundwater is not immune to modern-day pollution

    Groundwater that has lingered in Earth’s depths for more than 12,000 years is surprisingly vulnerable to modern pollution from human activities. Once in place, that pollution could stick around for thousands of years, researchers report online April 25 in Nature Geoscience. Scientists previously assumed such deep waters were largely immune to contamination from the surface.

    “We can’t...

    04/25/2017 - 16:12 Sustainability, Pollution, Earth
  • Wild Things

    How a dolphin eats an octopus without dying

    Most people who eat octopus prefer it immobile, cut into pieces and nicely grilled or otherwise cooked. For some, though, the wiggly, sucker-covered arms of a live octopus are a treat — even though those arms can stick to the throat and suffocate the diner if they haven’t been chopped into small enough pieces.

    Dolphins risk the same fate when eating octopus — and they can’t cook it or...

    04/25/2017 - 13:00 Animals