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  1. Earth

    Minerals evolved along with life

    Turns out, the variety and number of minerals in the solar system and on Earth have increased through time, and some minerals exist because Earth has life.

    By Sid Perkins
  2. Health & Medicine

    Telomere enzyme a likely key to longevity

    Study with the telomerase enzyme gives mice a longevity boost without high cancer risk.

    By Patrick Barry
  3. Space

    Extrasolar planetary system makes pictorial debut

    The first images of a planetary system beyond the solar system are released, while the Hubble Space Telescope snaps a shot of likely planet orbiting a nearby star.

    By Ron Cowen
  4. Life

    Schools make fish smarter

    A study of consensus decision making shows that sticklebacks make wider choices in groups of three or more.