See stunning images of the reindeer that call the dark, cold Arctic home.
Google Earth and air photos reveal the abandoned sites once dotted with read-to-launch Nike Ajax and Nike Hercules missiles.
A strong earthquake of preliminary magnitude 7.3 struck off the coast of Japan today, according to the U.S. Geological Survey (USGS).
A nearly complete skull found in Dmanisi, in the Republic of Georgia, has scientists suggesting the earliest, now-extinct human lineages may be one species, not several.
A fossil containing the remains of a large, predatory amphibian choking on another creature is up for auction in October, along with various other amazing fossils, such as that of a ruminating hog.
The solar-powered aircraft finished its historic cross-country flight with absolutely zero fuel, though it had to land early due to a ripped wing.
The skeletons were wearing toe rings that may have been used for magical purposes, archaeologists say.
Earth's atmosphere is about 78 percent nitrogen, 21 percent oxygen, with trace amounts of water, argon, carbon dioxide and other gases.