Uncategorized

  1. Archaeology

    Stone Age culture bloomed inland, not just along Africa’s coasts

    Homo sapiens living more than 600 kilometers from the coast around 105,000 years ago collected crystals that may have had ritual meaning.

    By Bruce Bower
  2. Cosmology

    Physicists’ devotion to symmetry has led them astray before

    If dark matter WIMPs are mythical, they join the ancient idea that the planets moved in circles.

    By Tom Siegfried
  3. Animals

    Weather radar shows 30 metric tons of grasshoppers swarmed Las Vegas one night

    Everything’s glitzier in Las Vegas. The most intensely lit U.S. city shows the impact of artificial light on insects on a megascale.

    By Susan Milius
  4. Health & Medicine

    Moderna and Pfizer COVID-19 vaccines may block infection as well as disease

    The mRNA vaccines are about 90 percent effective at blocking coronavirus infection, which could lead to reduced transmission, real-world data suggest.