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E.g., 08/31/2016
E.g., 08/31/2016
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  • Science Ticker

    For snowy owls, wintering on the prairie might be normal

    White, fierce and fluffy, snowy owls are icons of Arctic life. But some of these owls are not cool with polar winters.

    Every year, part of the population flies south to North American prairies. Ornithologists thought those birds fled the Arctic in desperation, haggard and hungry. But the prairie owls are doing just fine...

    08/31/2016 - 00:00 Animals, Ecology
  • News

    Brain’s blood appetite grew faster than its size

    The brains of human ancestors didn’t just grow bigger over evolutionary time. They also amped up their metabolism, demanding more energy for a given volume, a new study suggests.

    Those increased energy demands might reflect changes in brain structure and organization as cognitive abilities increased, says...

    08/30/2016 - 19:05 Human Evolution, Anthropology, Neuroscience
  • News

    Radio signal probably not from extraterrestrials

    A radio signal detected last year has sparked speculation that an advanced alien civilization is broadcasting from a relatively nearby planet. But recent scans have turned up nothing, suggesting the blip was a false alarm and nothing more than earthly interference.

    In May 2015, astronomers detected a blast of radio waves coming from the direction of HD 164595, a sunlike star about 94...

    08/30/2016 - 17:00 Astronomy
  • News

    Dog brains divide language tasks much like humans do

    Dogs process speech much like people do, a new study finds. Meaningful words like “good boy” activate the left side of a dog’s brain regardless of tone of voice, while a region on the right side of the brain responds to intonation, scientists report in the Sept. 2 Science.

    Similarly, humans process the meanings of words in the left hemisphere of the brain, and interpret...

    08/30/2016 - 15:49 Animals, Language, Neuroscience
  • News

    Tasmanian devils evolve resistance to contagious cancer

    A few Tasmanian devils have started a resistance movement against a contagious cancer that has depleted their numbers.

    Since devil facial tumor disease was first discovered in 1996, it has wiped out about 80 percent of the Tasmanian devil population. In some places, up to 95 percent of devils (Sarcophilus harrisii) have succumbed to facial tumors, spread when devils bite each...

    08/30/2016 - 11:00 Cancer, Genetics, Molecular Evolution
  • Science Ticker

    Mosquito moms can pass Zika to offspring

    Female mosquitoes carrying the Zika virus can pass the infection to the next generation, lab tests show.

    Among Aedes aegypti mosquitoes, thought to be the main species spreading Zika in the Americas, at least...

    08/29/2016 - 17:00 Biomedicine, Animals
  • News

    Fossil autopsy claims Lucy fell from tree

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    In a macabre twist, the hominid evolutionary tree’s most famous fossil star, Lucy, tumbled to her death from high up in a tree, a controversial new study suggests.

    Some of the damage to Lucy’s 3.2-million-year-old partial skeleton most likely occurred when she fell from a height of 13 meters or more, say paleoanthropologist John Kappelman of the...

    08/29/2016 - 11:00 Anthropology
  • Introducing

    GluMI cells are anything but

    Despite its name, the newly identified GluMI cell (pronounced “gloomy”) is no downer.

    It’s a nerve cell, spied in a mouse retina, that looks like one type of cell but behaves like another. Like neighboring retina nerve cells that subdue, or deaden, activity of other nerve cells, GluMI cells have a single arm extending from their body. But unlike those cells, GluMI cells actually seem to...

    08/29/2016 - 09:00 Neuroscience
  • News

    Bacteria-sized molecules created in lab

    Scientists have created giant molecules — the size of bacteria — that may be useful in future quantum computers.

    The molecules of unusual size are formed from pairs of Rydberg atoms — atoms with an electron that has been boosted into a high-energy state. Such electrons orbit far from their atom’s nucleus and, as a result, can feel the influence of faraway atoms.

    To create the...

    08/29/2016 - 07:00 Physics
  • Science Visualized

    Spacecraft reveal diversity in solar system's landscapes

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    Over the last several years, spacecraft have beamed back images from all across the solar system, revealing a complex tapestry of landscapes. Dust shapes the scenery on comet 67P, whereas ice rules on Pluto and the moons of Saturn.

    At first glance, many of these terrains seem the same — mountains, craters and canyons show up everywhere. But...

    08/28/2016 - 09:00 Planetary Science