A smart, fun countdown that details how ancient technology worked, how surprisingly advanced it was, and how it was kind of awesome.

Scattered around the world are long-forgotten engineering marvels, decaying cities and empty factories that once stood on the cutting edge of design and construction. Today they are ...

It's probably the greatest historical "what if?" of all time. A question that fascinates and horrifies in equal measures: what if Nazi Germany had won the Second World War? In this ...

A documentary series that exposes the theories behind what happened on the fateful day of disappearances and what science can now tell us about these events with Terry O'Quinn as a host.

The KKK, The Priory of Sion, The Order Of Assassins - the names might be familiar but - Who were they? What were they? What were their beliefs and aims? This six episode series explores ...

Jamie Theakston attempts to uncover the truth about historical mysteries, ancient relics, hidden treasures, conspiracy theories and lost civilizations. Have these stories been omitted from the history books?

Documentary series hosted by Zachary Quinto based on the 1970s series that examined unexplained phenomena from all over the world.

Scientist explore some of Earth's phenomenons.