Uncategorized

  1. Earth

    NASA images may help track sewage in coastal waters

    Sewage-contaminated water absorbs certain wavelengths of light, leaving a signature that can be detected by space-based instruments, a new study finds.

    By Sofia Caetano Avritzer
  2. Anthropology

    A drowned landscape held clues to the lives of ancient human relatives

    The remains of extinct Homo erectus dredged from the seabed off Java, along with thousands of animal fossils, are revealing a long-lost ecosystem.

    By Michael Marshall
  3. Health & Medicine

    Chronic low back pain may be less likely if you walk – a lot

    Adults who walked more than 100 minutes per day were less likely to have chronic low back pain than those who walked fewer than 78 minutes per day.