News

  1. Humans

    Ancient hominid butchers get trampled

    Bone marks advanced as evidence of stone-tool use to butcher animals 3.4 million years ago may actually have resulted from animal trampling, scientists say.

    By Bruce Bower
  2. Health & Medicine

    Cocaine trumps food for female rats

    A study in rats finds that males prefer food over cocaine while females prefer the drug, a step toward better understanding of sex differences in addiction.

    By Laura Sanders
  3. Health & Medicine

    Alcohol heart benefits show up even after bypass surgery

    Having two to three drinks a day was associated with decreased heart problems in men during the three years after the operation, researchers from Italy report.