News

  1. Health & Medicine

    Marijuana ingredient slows artery hardening

    Low doses of the chemical that causes marijuana's high can slow the progression of atherosclerosis.

    By Christen Brownlee
  2. Humans

    Change of fuel could extend lives in Africa

    By switching from biofuels such as wood and charcoal to kerosene or other fossil fuels, people in many parts of Africa could significantly trim indoor air pollution, thereby delaying millions of premature deaths from pulmonary disease over the next 25 years.

    By Sid Perkins
  3. Health & Medicine

    Surgical risk from painkiller may be brief

    A new study suggests that patients might safely use painkillers such as ibuprofen up to 24 hours before surgery.