The Glyptodon was a prehistoric Armadillo so big that early humans used its shells for shelters! (photos)
It was the size of a car & could crush early humans with its clubbed tail
US town abandoned due to 1962 underground fire that continues to burn to this day! (video-photos)
What caused the demise of Centralia was a miscalculated plan to clear up the town landfill site...
Scientists discover upside-down lakes & waterfalls at the bottom of the Ocean (photos)
An ocean expedition near the Baja Peninsula revealed a strange, never-before-seen seascape teeming with life
