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Oct 16, 2010 01:05 PM ET // Tim Wall
Super villains aside, some have proposed blocking out the sun to curb global warming. But the U.N. may say no.
Oct 7, 2011 05:52 AM ET // Tim Wall
The cooling effect of the moon's shadow can cause atmospheric waves that travel about 100 meters (328 feet) per second.
Jan 12, 2011 06:37 PM ET // Tim Wall
The A-train of satellites monitoring Earth's equator is picking up a caboose.