Vol. 187 No. 12
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More Stories from the June 13, 2015 issue

  1. Animals

    Whether froglets switch sexes distinguishes ‘sex races’

    Rana temporaria froglets start all female in one region of Europe; in another region, new froglets of the same species have gonads of either sex.

  2. Neuroscience

    Brain on display

    In her online videos, Nancy Kanwisher goes where few other neuroscientists go.

  3. Astronomy

    Erupting volcanoes may cause exoplanet’s temperature extremes

    Temperatures fluctuate wildly on a nearby exoplanet, and volcanoes might be the culprit.

  4. Genetics

    Tameness is in the genes

    Taming affects common genes in multiple species.

  5. Genetics

    Humans and Neandertals mated more recently than thought

    Neandertals and humans interbred in Europe until shortly before Neandertals went extinct.

  6. Astronomy

    Andromeda reaches out to touch Milky Way

    The Andromeda galaxy is enveloped in a wispy halo of gas that extends halfway to the Milky Way.

  7. Animals

    Nighttime light pollution sabotages sex pheromones of moths

    Artificial lighting at night can trick female moths into releasing skimpy, odd-smelling sex pheromones.

  8. Physics

    Electron pairs can take the heat

    Electrons have been found pairing up for the first time in a solid that is not in a superconducting state.

  9. Genetics

    MicroRNAs track radiation doses

    MicroRNAs in the blood may indicate radiation damage, a study of mice finds.

  10. Neuroscience

    Fruit flies flee from shadows

    Studying flies’ responses to an ominous shadow may lead to a deeper understanding of humans’ emotions.

  11. Animals

    Deepwater dweller is first known warm-hearted fish

    The opah, a deep-diving fish, can keep much of its body warmer than its surroundings, making it similar to warm-blooded birds and mammals.

  12. Earth

    Asteroids boiled young Earth’s oceans, remnant rocks suggest

    Giant asteroid impacts may have boiled Earth’s oceans around 3.3 billion years ago, snuffing out near-surface life.

  13. Materials Science

    Spiders spin stronger threads with nanotubes

    Spiders sprayed with carbon nanotubes spin supertough strands of silk.

  14. Planetary Science

    Sea salt may stripe Europa’s surface

    Salt deposits on Jupiter’s moon Europa might be responsible for brown stripes on the icy satellite’s surface.

  15. Health & Medicine

    Snagging blood clots upgrades stroke care

    A new device threaded up to the brain via catheter can unblock vessels in cerebral arteries, studies show.

  16. Archaeology

    Earliest known stone tools unearthed in Kenya

    East African discoveries suggest stone-tool making started at least 3.3 million years ago.

  17. Genetics

    Ancient DNA pushes back timing of the origin of dogs

    DNA extracted from the fossil of an ancient wolf indicates dogs and wolves diverged longer ago than previously thought.

  18. Animals

    When swimming with manatees, mind the herd

    Manatees hang out in Florida’s Crystal River; tourists can choose a mindful visit or a harmful one

  19. Humans

    How Homo sapiens became world’s dominant species

    'First Peoples' dispels old ideas about human evolution and tells an updated tale of how Homo sapiens came to dominate the world.

  20. Plants

    Fifty years ago, ethylene research ripened

    In 1965, scientists realized ethylene was the molecule that ripens fruit.