Thursday, February 23, 2012 5:34:30 AM
Earth's clouds are getting lower, NASA satellite finds
http://www.sciencedaily.com/releases/2012/02/120222114358.htm?utm_medium=twitter&utm_source=twitterfeed
http://www.sciencedaily.com/releases/2012/02/120222114358.htm?utm_medium=twitter&utm_source=twitterfeed
