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  • Artifacts are lined up on a studio backdrop, from left, turquoise beads, a mosaic cylinder basket, shells, shell bracelets and more beads.


    Ancient Pueblos Traced Descent Through Moms

    February 21, 2017

    New DNA analysis of ancient Pueblo remains suggests that the complex society that once existed at Chaco Canyon in the southwestern United States traced family relationships through the mother’s line, confirming long-held contentions of modern Pueblos that the matrilineal system is centuries-old.

  • Two dark-colored fish with red and white accents in an aquarium


    Fish Evolution Shaped by Intense Rapids

    February 16, 2017

    New DNA-based research provides compelling evidence that a group of strange-looking fish living near the mouth of the Congo River are evolving due to the intense hydraulics of the river’s rapids and deep canyons.

  • An illustration of a purple planet-like object in a dark star field


    Public Invited to Search for New Nearby Worlds

    February 15, 2017

    A new citizen-science tool released today will help astronomers search for new worlds lurking in the outer reaches of our solar system and in neighboring interstellar space. 

  • A red microscopic image of growth lines in the tooth of Hypacrosaurus


    Dinosaur Eggs Took 3 to 6 Months to Hatch

    January 3, 2017

    New research on the teeth of fossilized dinosaur embryos indicates that the eggs of non-avian dinosaurs took a long time to hatch—between about three and six months. The study finds that contrary to previous assumptions, dinosaur incubation is more similar to that of typical reptiles than of birds.

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  • A coluber constrictor snake on the leaf-covered ground


    Ice Age Vertebrates Had Mixed Responses to Climate Change

    December 6, 2016

    New research examines how vertebrate species in the eastern United States ranging from snakes to mammals to birds responded to climate change over the last 500,000 years. The study reveals that contrary to expectation, the massive glaciers that expanded and contracted across the region affected animal populations in different ways at different times.

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