News

  1. Earth

    How deadly, fast-moving flows of volcanic rock and gas cheat friction

    Mixtures of hot volcanic rock and gas called pyroclastic flows travel so far by gliding on air, a new study suggests.

    By Maria Temming
  2. Math

    Mathematicians may have found the fastest way to multiply huge numbers

    A new theoretical method for multiplying enormous figures appears to achieve a speed first predicted decades ago.

    By Emily Conover
  3. Life

    How emus and ostriches lost the ability to fly

    Changes in regulatory DNA, rather than mutations to genes themselves, grounded some birds, a study finds.

    By Tina Hesman Saey
  4. Astronomy

    This planetary remnant somehow survived the death of its sun

    A small, sturdy piece of planet survived the collapse of its sun and now orbits the dead star.