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  1. Math

    Mathematicians report possible progress on proving the Riemann hypothesis

    A new study advances one strategy in the quest to solve the notoriously difficult problem, which is still stumping researchers after 160 years.

    By Emily Conover
  2. Health & Medicine

    Being bilingual is great. But it may not boost some brain functions

    A large study of U.S. bilingual children didn’t turn up obvious benefits in abilities to ignore distractions or switch quickly between tasks.

    By Laura Sanders
  3. Physics

    Big black holes can settle in the outskirts of small galaxies

    Astronomers have found dozens of surprisingly massive black holes far from the centers of their host dwarf galaxies.

    By Lisa Grossman
  4. Physics

    Spherical flames in space could solve the mystery of soot-free fires

    In microgravity, flames are sphere-shaped.