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  1. Physics

    Dark matter may slow the rotation of the Milky Way’s central bar of stars

    A method akin to studying a tree’s rings revealed the history of a slowdown of the rotating bar of stars at the heart of the Milky Way galaxy.

    By Emily Conover
  2. Anthropology

    Israeli fossil finds reveal a new hominid group, Nesher Ramla Homo

    Discoveries reveal a new Stone Age population that had close ties to Homo sapiens at least 120,000 years ago, complicating the human family tree.

    By Bruce Bower
  3. Animals

    How a gecko named Mr. Frosty could help shed new light on skin cancer

    The distinctive coloring and skin tumors of a type of gecko called Lemon Frost have been pegged to a gene implicated in human skin cancer.