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E.g., 07/27/2017
E.g., 07/27/2017
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Your search has returned 659 articles:
  • Letters to the Editor

    Readers question hominid family tree

    Hominid hubbub

    In “Hominid roots may go back to Europe” (SN: 6/24/17, p. 9), Bruce Bower reported that the teeth of Graecopithecus, a chimp-sized primate that lived in southeastern Europe 7 million years ago, suggest it was a member of the human evolutionary family.

    “Is it appropriate to use the terms ‘hominid’ and ‘ape’ as if the two are mutually exclusive categories?” asked online...

    07/26/2017 - 13:04 Anthropology, Physics, Animals
  • Wild Things

    Fire ants build towers with three simple rules

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    When faced with rushing floodwaters, fire ants are known to build two types of structures. A quickly formed raft lets the insects float to safety. And once they find a branch or tree to hold on to, the ants might form a tower up to 30 ants high, with eggs, brood and queen tucked safely inside. Neither structure requires a set of plans or a foreman ant leading the construction...

    07/21/2017 - 14:54 Animals
  • News

    Resistance to CRISPR gene drives may arise easily

    A genetic-engineering tool designed to spread through a population like wildfire — eradicating disease and even whole invasive species — might be more easily thwarted than thought.

    Resistance to the tools, called CRISPR gene drives, arose at high rates in experiments with Drosophila melanogaster fruit flies, researchers at Cornell University report July 20 in PLOS Genetics. Rates of...

    07/20/2017 - 16:35 Genetics, Science & Society, Animals
  • News

    Ravens pass tests of planning ahead in unnatural tasks

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    Ravens have passed what may be their toughest tests yet of powers that, at least on a good day, let people and other apes plan ahead.

    Lab-dwelling common ravens (Corvus corax) in Sweden at least matched the performance of nonhuman apes and young children in peculiar tests of advanced planning ability. The birds faced such challenges as selecting a rock useless at the...

    07/13/2017 - 14:20 Animals, Neuroscience, Evolution
  • Science Ticker

    Whales feast when hatcheries release salmon

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    Humpback whales, those innovative foodies, have discovered their own pop-up restaurants.

    Migrant humpbacks returning to southeastern Alaska in spring are the first of their kind known to make routine visits to fish hatcheries releasing young salmon into the sea, says marine ecologist Ellen Chenoweth.

    The whales are “40 feet long and they’re feeding on fish that...

    07/11/2017 - 19:05 Animals, Ecology, 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
  • Wild Things

    Drowned wildebeests can feed a river ecosystem for years

    More than a million wildebeests migrate each year from Tanzania to Kenya and back again, following the rains and abundant grass that springs up afterward. Their path takes them across the Mara River, and some of the crossings are so dangerous that hundreds or thousands of wildebeests drown as they try to traverse the waterway.

    Those animals provide a brief, free buffet for crocodiles and...

    06/27/2017 - 09:00 Animals, Ecology
  • Introducing

    This glass frog wears its heart for all to see

    A newly discovered glass frog from Ecuador’s Amazon lowlands is giving researchers a window into its heart.

    Hyalinobatrachium yaku has a belly so transparent that the heart, kidneys and urine bladder are clearly visible, an international team of researchers reports May 12 in ZooKeys. Researchers identified H. yaku as a new species using field observations, recordings of its distinct call...

    06/23/2017 - 07:00 Animals
  • Wild Things

    Sooty terns’ migration takes the birds into the path of hurricanes

    Hurricane season has officially begun in the North Atlantic, and it’s not just coastal communities that have to worry. A population of sooty terns off the southwest tip of Florida might want to worry, too. Depending on when and where storms hit, the terns could be in for a tough time. Their migratory route overlaps with the general path of hurricanes traveling from the waters off Africa up to...

    06/02/2017 - 10:35 Animals
  • Letters to the Editor

    Readers puzzled by proton's properties

    Proton puzzler

    Uncertainty over the proton’s size, spin and life span could have physicists rethinking standard notions about matter and the universe, Emily Conover reported in “The proton puzzle” (SN: 4/29/17, p. 22).

    Readers wondered about the diameter (or size) of the proton, which has three fundamental particles called quarks rattling around inside. “Still scratching my head over how...

    05/31/2017 - 15:45 Particle Physics, Climate, Planetary Science