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  1. Anthropology

    Ancient Maya warfare flared up surprisingly early

    Extreme conflicts broke out well before the decline of the Maya civilization, researchers say.

    By Bruce Bower
  2. Earth

    A new map is the best view yet of how fast Antarctica is shedding ice

    Stitching together data from several satellite missions allowed scientists to create the most comprehensive map of Antarctic ice flow ever.

    By Maria Temming
  3. Earth

    Decades of dumping acid suggest acid rain may make trees thirstier

    Acidified soil loses calcium, which can affect trees’ ability to hang on to water.

    By Carolyn Wilke
  4. Archaeology

    Satellites are transforming how archaeologists study the past

    In ‘Archaeology from Space,’ Sarah Parcak takes readers on a lively tour of the past, and archaeology of the 21st century.