Learn about three symbolic glyphs painted in a cave in Mexico where people once visited to perform fire rituals for warriors.

Learn how mosaic-floored banquet halls and stone benches are strengthening the case for a school where Aristotle may have ...

Learn more about what caused the decades-old spy satellite to break apart and why its debris could pose a threat to other ...

Meriwether Lewis died in October 1809. Most researchers claim that he took his own life, but some debate that he could have been murdered.