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    Study Identifies Ancient Shark Ancestors

    March 13, 2017

    New research based on x-ray imaging provides the strongest evidence to date that sharks arose from a group of bony fishes called acanthodians. 

  • 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.

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    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.

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    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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