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  1. Animals

    Too many choices complicate female frogs’ sex lives

    In the lab, female frogs were less likely to choose preferred males as mating calls increased, potentially giving other males a better shot.

    By Freda Kreier
  2. Health & Medicine

    Newborn screening for cancer risk could save lives. Should it be done?

    Genetic screening that identifies cancer-linked mutations in newborns could give doctors a head start on treatment, but it comes with risks.

    By Meghan Rosen
  3. Science & Society

    Bamboo toilet paper intrigued me. Reality turned out to be messy

    What makes a greener wipe? Researchers have more to say about bamboo's ecological risks, given limited carbon footprint data.

    By Rebecca Dzombak
  4. Space

    The largest known galaxy is wider than 17 Milky Ways

    Scientists have identified the edge of galaxy IC 1101 and crowned it with the title of largest known galaxy.