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E.g., 06/27/2017
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  • News in Brief

    Floral curve test shows what’s great for a moth is not so good for a flower

    PORTLAND, ORE. — A great flower shape for a moth trying to get a drink in the dark turns out to be awful from the plant’s point of view.

    Offering hawk moths (Manduca sexta) a range of 3-D printed flowers with different curvatures shows that a moderately curved trumpet shape lets moths sip most efficiently, Foen Peng reported June 24 at the Evolution 2017 meeting. That’s a win for a...

    06/27/2017 - 10:00 Plants, Evolution, Animals
  • News

    Battering storms caused Antarctic sea ice to shrink at record pace

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    Unusually severe storms in 2016 wrought the quickest meltdown of Antarctic sea ice ever seen during a Southern Hemisphere spring. This could explain why Antarctica’s sea ice extent hit a record low earlier this year.

    Satellite images show that the extent of Antarctic sea ice decreased by an average of 75,000 square kilometers — almost the area of South...

    06/27/2017 - 07:00 Earth, Climate
  • Science Stats

    Earth’s dry zones support a surprising number of trees

    Earth’s dry regions have more trees than once thought — a hopeful note in the fight against climate change.

    An analysis of high-resolution satellite imagery reveals that drylands globally have 40 to 47 percent more tree cover (an extra 467 million hectares) than reported in earlier estimates. An international team of researchers used Google Earth and Collect Earth, a program developed by...

    06/26/2017 - 07:00 Ecology
  • Reviews & Previews

    Every breath you take contains a molecule of history

    Caesar’s Last BreathSam KeanLittle, Brown and Co., $28

    Julius Caesar could have stayed home on March 15, 44 B.C. But mocking the soothsayer who had predicted his death, the emperor rode in his litter to Rome’s Forum. There he met the iron daggers of 60 senators.

    As he lay in a pool of blood, he may have gasped a final incrimination to his protégé Brutus: You too, my son? Or maybe...

    06/25/2017 - 07:00 Chemistry, Earth, History of Science
  • 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
  • News

    Scientists spy on the secret inner life of bacteria

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    On the surface, bacteria may appear bland. But there’s more going on inside than meets the eye, new research is revealing.

    For many years, scientists thought that bacteria didn’t have internal structures and were basically “bags of enzymes,” says structural and cell biologist Martin Warren of the University of Kent in England.

    Now, one group of researchers has...

    06/22/2017 - 14:00 Microbiology
  • News

    Bones make hormones that communicate with the brain and other organs

    Long typecast as the strong silent type, bones are speaking up.

    In addition to providing structural support, the skeleton is a versatile conversationalist. Bones make hormones that chat with other organs and tissues, including the brain, kidneys and pancreas, experiments in mice have shown.

    “The bone, which was considered a dead organ, has really become a gland almost,” says Beate...

    06/21/2017 - 15:00 Health, Biomedicine, Cells
  • News

    Kepler shows small exoplanets are either super-Earths or mini-Neptunes

    Small worlds come in two flavors. The complete dataset from the original mission of the planet-hunting Kepler space telescope reveals a split in the exoplanet family tree, setting super-Earths apart from mini-Neptunes.

    Kepler's final exoplanet catalog, released in a news conference June 19, now consists of 4,034 exoplanet candidates. Of those, 49  are rocky worlds in their stars'...

    06/19/2017 - 18:39 Exoplanets, Planetary Science
  • Science Ticker

    New fossils shake up history of amphibians with no legs

    Newly named fossils suggest that a weird and varied chapter in amphibian deep history isn’t totally over.

    Small fossils about 220 million years old found along steep red slopes in Colorado represent a near-relative of modern animals called caecilians, says vertebrate paleontologist Adam Huttenlocker of the University of Southern California in Los Angeles.

    Caecilians today have long...

    06/19/2017 - 15:30 Paleontology, Animals, Evolution
  • News

    Eclipse watchers catch part of the sun’s surface fleeing to space

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    For the first time, researchers have watched relatively cool parcels of plasma speed away from the surface of the sun and off into space, all the while cocooned in a million-degree flare.

    Shadia Habbal of the University of Hawaii in Honolulu and colleagues used a specially designed spectrometer to observe the eruption from Svalbard, Norway, during the March 2015...

    06/16/2017 - 14:57 Astronomy, Planetary Science