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  1. Science & Society

    The gap in parenting time between middle- and working-class moms has shrunk

    Some well-educated mothers are spending less time with their kids than before, while some less-educated mothers are spending more, a new study shows.

    By Sujata Gupta
  2. Environment

    Why planting tons of trees isn’t enough to solve climate change

    Massive projects need much more planning and follow-through to succeed – and other tree protections need to happen too.

    By Carolyn Gramling
  3. Materials Science

    These weird, thin ice crystals are springy and bendy

    Specially grown fibers of frozen water bend into curves and spring back when released.

    By Emily Conover
  4. Life

    Sea otters stay warm thanks to leaky mitochondria in their muscles

    For the smallest mammal in the ocean, staying warm is a challenge.