Uncategorized

  1. Archaeology

    This hieroglyph is the oldest known record of the Maya calendar

    Plaster fragments with the markings date to at least 200 B.C. and indicate that the calendar system, still used today, might be centuries older.

    By Anna Gibbs
  2. Planetary Science

    This is the biggest known comet in our solar system

    The nucleus of comet Bernardinelli-Bernstein is about 120 kilometers across — about twice the width of Rhode Island — and is darker than coal.

    By Sid Perkins
  3. Anthropology

    How ancient, recurring climate changes may have shaped human evolution

    Climate changes drove where Homo species lived over the last 2 million years, with a disputed ancestor giving rise to H.