Uncategorized

  1. Earth

    Early web-footed bird made impression

    Researchers have discovered the fossil tracks of an otherwise unknown bird in 110-million-year-old sediments, which pushes back evidence of web-footed birds by at least 25 million years.

    By Sid Perkins
  2. Earth

    Where’s Waldo . . . and 6 billion others?

    Scientists have combined satellite imagery and detailed census data to develop a worldwide database that can provide estimates of the number of people located in areas on a grid that has boxes with areas of 1 square kilometer or less.

    By Sid Perkins

  3. Wasp redesigns web of doomed spider

    A wasp larva injects a spider with a web-altering drug, driving the spider to spin a shelter just right for a wasp cocoon.