Over 500 years ago, a young woman was buried in the holiest temple of the ancient Aztec city Tenochtitlan. She was surely an elite member of her society, based on the location of her grave. But the way she was buried doesn't fit with anything anthropologists know about Aztec society. Her body, discovered recently 15…

In 1492, Christopher Columbus landed in what is now the Bahamas, changing the world forever. But was he first non-indigenous person to reach the Americas? Vikings got there before him, and possibly Polynesians too...and those are just the sane theories.

When Europeans reached South America roughly 500 years ago, they were awed by all the rubber products in Aztec cities, including giant bouncy balls and rubber bands. Now scientists have figured out how the Aztecs manufactured different grades of rubber.