Uncategorized

  1. Climate

    Earth’s last major warm period was as hot as today

    Sea surface temperatures today are comparable to those around 125,000 years ago, a time when sea levels were 6 to 9 meters higher, new research suggests.

    By Thomas Sumner
  2. Ecosystems

    In debate over origin of fairy circles, both sides might be right

    Odd bare spots called fairy circles in African grasslands might be caused by both termites and plants.

    By Susan Milius
  3. Science & Society

    Cancer studies get mixed grades on redo tests

    Replications of cancer studies fail to reproduce some results.

    By Tina Hesman Saey
  4. Climate

    Monsoon deluges turned ancient Sahara green

    The ancient Sahara Desert sprouted trees and lakes for thousands of years thanks to intense rainfall.