News

  1. Life

    Environment blamed for autism

    A new study of twins downplays the role of genes in determining who will get autism.

    By Tina Hesman Saey
  2. Life

    DNA hints at polar bears’ Irish ancestry

    Mitochondrial genetic analysis suggests a bit o’ hybridizing long ago with brown bears on the Emerald Isle.

    By Susan Milius
  3. Earth

    Greenland’s ice sheets face new threat

    Subsurface ocean warming is likely to be dramatic in that region, a new study finds.

    By Janet Raloff
  4. Earth

    Sulfur stalls surface temperature rise

    A new study shows how pollutants helped balance out the effects of greenhouse gases from 1998 to 2008.