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Latest NASA's Centennial Challenges Program Stories

2011-09-22 03:59:19

NASA has selected The Cleantech Open of Redwood, Calif., to manage the agency's Night Rover Challenge that will culminate in a competition in fall 2012.


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'.