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  1. 19074

    As a resident of South Carolina, I was fascinated by this article, which refers to an investigation of an ancient crater buried beneath the Piedmont sediments of our state. However, there wouldn’t be deep sediments overlying basement rock in the Piedmont. There, “basement rock” is close to or at the surface. Julian R. HarrisonCharleston, S.C. […]

    By Science News
  2. Earth

    Presto, Change-o!

    Compared with the snail's-pace processes that normally shape Earth's surface, the impacts of extraterrestrial objects change our planet's geology in a flash.

    By Sid Perkins
  3. Health & Medicine

    Standing Up to Gravity

    Studies in space can help physicians better understand a disorder in which patients get faint or dizzy while standing.