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Yesterday NASA announced the strongest evidence yet of liquid water on present-day Mars. Scientists have long known that the Red Planet has substantial amounts of water frozen in the ice caps at its poles, and observations suggest the planet had rivers, lakes, and possibly even oceans in the past...
Feeling the Heat
Wildfires in the western U.S. are destroying record numbers of homes and forests.Read More >>
Meet America’s Newest Panda
A giant panda gives birth at the National Zoo in Washington, D.C.Read More >>
A new exhibit shows off nature’s strangest organisms.Read More >>