Uncategorized

  1. Life

    To get a deeper tan, don’t sunbathe every day

    Skin cells make protective melanin on a 48-hour cycle.

    By Tina Hesman Saey
  2. Plants

    Liverwort plants contain a painkiller similar to the one in marijuana

    Cannabinoids found in liverwort plants could spell relief for those suffering from chronic pain.

    By Jennifer Leman
  3. Archaeology

    Ancient Clovis people may have taken tool cues from earlier Americans

    Ancient Americans’ spearpoints may have heralded later Clovis weapons.

    By Bruce Bower
  4. Tech

    A new palm-sized drone is mini, but mighty

    Unlike other small drones, this flying robot can tote objects up to 40 times its own weight.