News

  1. Earth

    New analysis rejuvenates Himalayas

    The Asian mountain range that includes some of the tallest peaks in the world turns out to be about 15 million years younger than geologists previously thought.

    By Sid Perkins
  2. Earth

    Diesels: NO rises with altitude

    The combustion chemistry of heavy-duty diesel trucks changes with altitude.

    By Janet Raloff
  3. Earth

    Passive smoking’s carcinogenic traces

    Researchers isolated markers of a cigarette-generated carcinogen in urine of nonsmoking women married to smokers.

    By Janet Raloff
  4. Health & Medicine

    Fatty plaques are unstable in vessels

    Fatty plaques that form on the inside of blood vessels are less stable and hence more prone to rupture than are hard, calcified plaques.