News

  1. Astronomy

    Distant rocky planets may have exotic chemical makeups that don’t resemble Earth’s

    Elements sprinkled on white dwarf stars suggest that the mantles of faraway rocky worlds differ greatly from their counterparts in our solar system.

    By Ken Croswell
  2. Earth

    Scientists are racing to save the Last Ice Area, an Arctic Noah’s Ark

    The Last Ice Area may be the final refuge for summer sea ice and the creatures that depend on it. Saving it is an ambitious goal with many hurdles.

    By Freda Kreier
  3. Animals

    Climate change may be shrinking tropical birds

    Scientists had previously found that migratory birds are getting smaller as temperatures rise. Dozens of tropical, nonmigratory species are too.