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

Get the full story behind the extinction of the mammoth species that once roamed the earth.

Dinosaurs can reveal fascinating details of how life was 65 million years ago. But unearthing them can prove to be challenging.

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