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  1. Animals

    These seals haven’t lost their land ancestors’ hunting ways

    Clawed pawlike forelimbs help true seals hunt like their land-dwelling ancestors.

    By Laurel Hamers
  2. Archaeology

    This ancient Maya city may have helped the Snake King dynasty spread

    A rural hub in an ancient Maya state gets its due with some laser help.

    By Bruce Bower
  3. Science & Society

    Here’s why putting a missile defense system in space could be a bad idea

    Expanding missile defense capabilities could put the world on a slippery slope to space warfare.

    By Emily Conover
  4. Materials Science

    A new plastic film glows to flag food contaminated with dangerous microbes

    Plastic patches that glow when they touch some types of bacteria could be built into food packaging to reduce the spread of foodborne illness.