Thursday, April 21, 2011

Cosmic Log: Satellites shed light on Earth Day
[ Thu, 21 Apr 2011 16:56:12 GMT ]

Science editor Alan Boyle's Weblog: The planet celebrates its 42nd annual Earth Day on Friday, and some of the coolest gifts to mark the occasion are coming from places that are out of this world: the dozens of satellites that are keeping watch from orbit.Science editor Alan Boyle's Weblog: The planet celebrates its 42nd annual Earth Day on Friday, and some of the coolest gifts to mark the occasion are coming from places that are out of this world: the dozens of satellites that are keeping watch from orbit.


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