News

  1. Astronomy

    Gravity’s lens: Finding a dim cluster

    Relying solely on a gravitational mirage rather than visible images, astronomers have discovered a previously unknown cluster of galaxies and measured its distance from Earth.

    By Ron Cowen

  2. Youthful nicotine addiction may be growing

    Although the rate of daily cigarette smoking has declined among teenagers and young adults over the past 20 years, the number of smokers in this age range who develop nicotine dependence has risen dramatically.

    By Bruce Bower
  3. Health & Medicine

    Alcohol on your breath need not be all bad

    Drugs such as insulin may be delivered by inhaling mists of medicine-containing alcohol.

    By John Travis
  4. Animals

    Shhh! Is that scrape a caterpillar scrap?

    A series of staged conflicts reveals the first known acoustic duels in caterpillars.