News

  1. Earth

    Natural or Synthetic? Test reveals origin of chemicals in blubber

    Natural compounds that are chemically akin to certain industrial chemicals wend their way up marine food chains and accumulate in whale blubber.

    By Ben Harder
  2. Paleontology

    Groovy Bones: Mammalian ear structure evolved more than once

    Fossils of an ancient egg-laying mammal indicate that the characteristic configuration of the bones in all living mammals' ears arose independently at least twice during the group's evolution.

    By Sid Perkins
  3. Health & Medicine

    Heartfelt Fear: Findings link stress and cardiac symptoms

    Emotional stress can lead to symptoms that mimic a heart attack, even in people without coronary artery blockages, possibly by causing an unusual secretion of hormones.