Clovis points found on the east coast of the U.S. challenge the traditional theory that the Clovis people migrated to North-America via the Bering land bridge.

Salt—necessary for human life—was once a highly prized commodity that could not be easily accessed in many parts of the world.

Known as the "king of the tyrant lizards," T-Rex was one of the largest carnivores of all time.

Scientists believe a combination of disastrous events may have led to the extinction of the dinosaurs.