Uncategorized

  1. Planetary Science

    Making Mercury

    New computer simulations of Mercury's violent formation account for the planet's abundance of heavy elements and also reveal that some of the debris generated by the collision could have found its way to Earth and Venus.

    By Ron Cowen
  2. Animals

    Hummingbirds can clock flower refills

    Hummingbirds can keep track of when a particular flower has replenished its nectar and is worth visiting again.

    By Susan Milius

  3. 19666

    Although I love finding out about how traits supposedly unique to humans are shared by animals, I don’t see how the experiment in this article demonstrates episodic memory in hummingbirds. How is this not the simple sensing (smelling) of the sugar drink in the syringes? Yvonne LyerlaSonoma, Calif.