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Latest NASA Environmental Management System Stories

888414e3aeb490a8b392df30705241631
2005-03-29 13:26:05

Soot is normally something you think of at the bottom of your chimney, but it also gets into the air, and scientists have been finding it at the frozen Arctic.


Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.