News

  1. Astronomy

    A Swarm of Umbrellas vs. Global Warming: Astronomer thinks small to save Earth

    A trillion miniature spacecraft could provide a giant sunshade for Earth, significantly reducing global warming.

    By Ron Cowen
  2. Ecosystems

    Worthless waters

    The biological riches of the oceans will be spent within decades if current trends continue.

    By Ben Harder
  3. Astronomy

    Web Special: Hubble Repair Mission Is a Go

    After several years of uncertainty following the Columbia shuttle disaster, NASA this week gave the go-ahead for a shuttle crew to replace and repair parts on the 16-year-old Hubble Space Telescope.

    By Ron Cowen

  4. Mom’s caffeine harms pups’ brain cells

    Rats born to mothers who drank caffeinated beverages throughout their pregnancies had abnormal brain-cell function.