The history of the planet and the civilizations that have lived on it are among life’s greatest mysteries.People have roamed ...

Researchers across the globe put on their sleuthing hats this year to provide answers to questions that have lingered from decades to centuries. The thought-provoking findings offer new ways of ...

A landmark discovery by teams from two Florida universities has unearthed one of history's greatest mysteries — what caused the Plague of Justinian. It killed up to 50 million people in the sixth ...

Complete episode list, ratings, and streaming details for History's Greatest Mysteries Season 7.