Uncategorized

  1. Space

    Flooring the cosmic accelerator

    If cosmologist Will Percival of the University of Portsmouth in England is right, the universe will end about 60 billion years from now, when every molecule and atom will be torn asunder by a mysterious entity that opposes gravity’s pull and turns it into a cosmic push.

    By Ron Cowen
  2. Ecosystems

    Bring in the replacements

    Missing links in ecosystems disrupted by extinctions could be restored by introducing species that perform the same function, new field experiments suggest.

    By Sid Perkins
  3. Health & Medicine

    Leaving a mark

    Child abuse may leave chemical marks on the brains of people who later kill themselves.

    By Tina Hesman Saey
  4. Life

    Brittle arms lose muscle

    In lab simulations of future ocean conditions, brittle stars grow extra-calcified but puny arms.