Uncategorized

  1. Planetary Science

    Did rivers once run on the Red Planet?

    A fan-shaped region of debris on Mars is providing new evidence that some places on the Red Planet, now bone-dry, once had long-lasting rivers or lakes.

    By Ron Cowen
  2. Tech

    Glow with the flow

    Potentially usable electricity flows when water is forced through millions of ceramic tubes thinner than a human hair.

    By Peter Weiss
  3. Tech

    Glow with the flow

    Potentially usable electricity flows when water is forced through millions of ceramic tubes thinner than a human hair.

    By Peter Weiss
  4. Physics

    Dune leapfrogging is deciphered

    Some wind-propelled sand dunes can pass right through each other if their relative sizes are right, new computer simulations indicate—although the sand grains of one dune don't actually penetrate through the other dune.