There's a good chance that you are guilty of googling some ailment you have, or searching about a pain in your body that WebMD tells you is much more serious than it actually is.

Just over 125,000 years ago, humanity nearly went extinct until a dramatic shift occurred--fossil records suggest that suddenly Homo sapiens displayed new behaviors like tracking the tides and eating the nearby oysters. Before long, they'd pulled themselves back from the brink of extinction.