Feature

  1. Earth

    Pumping carbon dioxide deep underground may trigger earthquakes

    Injecting carbon dioxide deep underground offers a promising way to curb global warming, but the extra pressure may cause faults to slip or fractures to release the buried gas.

    By Charles Petit
  2. Ecosystems

    Dam demolition lets the Elwha River run free

    Removing a dam involves more than impressive explosions. Releasing a river like Washington state's Elwha transforms the landscape and restores important pathways for native fish.

    By Alexandra Witze
  3. Ecosystems

    Cities are brimming with wildlife worth studying

    Urban ecologists are getting a handle on the varieties of wildlife — including fungi, ants, bats and coyotes — that share sidewalks, parks and alleyways with a city’s human residents.