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  1. Life

    Gene editing creates mice with two biological dads for the first time

    Scientists have used CRISPR/Cas9 to make mice with two biological fathers.

    By Tina Hesman Saey
  2. Life

    See these dazzling images of a growing mouse embryo

    A new microscope creates intimate home movies of mice embryos taking shape, and could shed light on the mysterious process of mammalian development.

    By Cassie Martin
  3. Astronomy

    If the past is a guide, Hubble’s new trouble won’t doom the space telescope

    Hubble is in safe mode, but astronomers are optimistic that the observatory will keep working.

    By Lisa Grossman
  4. Animals

    What bees did during the Great American Eclipse

    A rare study of bees during a total solar eclipse finds that the insects buzzed around as usual — until totality.