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Marie Antoinette never actually said "Let them eat cake"
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In order to prove that this skeleton is King Richard III, scientists compare DNA from the skeleton with DNA from a direct descendant.
Many believe a single asteroid set off the dinosaurs' extinction. But even more destructive than its impact was the chain of events it set into motion.
A paleobiologist walks us through the dissection of a 40,000-year-old woolly mammoth, one of the best-preserved carcasses of its kind.