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  1. Astronomy

    First known exoplanets have few counterparts

    The first known exoplanets were discovered around pulsars — probably one of the least likely places to have been found, astronomers now say.

    By Christopher Crockett
  2. Animals

    Same math describes relationship between diverse predators and prey

    From lions to plankton, predators have about the same relationship to the amount of prey, a big-scale ecology study predicts.

    By Susan Milius
  3. Health & Medicine

    How farm life can prevent allergies

    Farm dust prevents allergies by turning on an anti-inflammatory enzyme in the cells lining mice’s lungs.

    By Meghan Rosen
  4. Astronomy

    Two stars were once considered coldest known

    Two stars once thought to be the coldest known are actually scorching compared with some truly frigid brown dwarfs.