Uncategorized

  1. Paleontology

    Saber-toothed cats were fierce and family-oriented

    New details shift the debate on whether Smilodon lived and hunted in packs, and answer questions about other behaviors and abilities.

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  2. Neuroscience

    Women have a new weapon against postpartum depression, but it’s costly

    The newly approved drug brexanolone simulates a natural hormone to alleviate symptoms of postpartum depression.

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  3. Health & Medicine

    U.S. fentanyl deaths are rising fastest among African-Americans

    New statistics on fentanyl-related overdoses show troubling increases in deaths among African-Americans, Hispanics and men.

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  4. Archaeology

    The oldest known astrolabe was used on one of Vasco da Gama’s ships

    A navigational device for taking altitudes at sea was found in a Portuguese shipwreck in the Arabian Sea and dates back to 1496.

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  5. Paleontology

    Newfound fossils in China highlight a dizzying diversity of Cambrian life

    A new treasure trove of Cambrian fossils in China dating to 518 million years ago could rival Canada’s Burgess Shale.

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  6. Health & Medicine

    Saving monkey testicle tissue before puberty hints at a new way to preserve fertility

    Frozen testicle tissue samples from prepubescent monkeys transplanted back onto those monkeys once they matured produced sperm.

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  7. Health & Medicine

    A new ketamine-based antidepressant raises hope — and questions

    Little is known about the long-term effects on people of a newly approved antidepressant based on the anesthetic ketamine.

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  8. Planetary Science

    Ryugu is probably a chip off one of these two other asteroids

    Japan’s Hayabusa2 team has narrowed down the asteroid Ryugu’s origins based on its color.

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  9. Astronomy

    X-ray ‘chimneys’ connect the Milky Way to mysterious gamma-ray bubbles

    Two columns of X-rays that are hundreds of light-years long could explain the existence of giant bubbles of energetic light that sandwich the galaxy.

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  10. Paleontology

    In a first, a fossilized egg is found preserved inside an ancient bird

    Scientists have found the first known fossil of a bird that died with an unlaid egg inside its body. The egg has been crushed by pressure over time.

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  11. Planetary Science

    Surprising astronomers, Bennu spits plumes of dust into space

    Bennu spews dust from its rocky surface, which may be a new kind of asteroid activity.

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  12. Science & Society

    The learning gap between rich and poor students hasn’t changed in decades

    The educational achievement gap between the poorest and richest U.S. students remains as wide as it was almost 50 years ago.

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