Catastrophe! Part 1: The Day the Sun Went Out

An exploration of the theory of David Keys that a "catastrophe" in the mid sixth century caused major changes in the world's weather for the next several years.

Catastrophe! Part 2: How the World Changed

Could a violent volcanic eruption of Krakatoa be responsible for the climatic cataclysm that hit Earth in 535 A.D., causing two years of darkness, famine, drought and disease, and did this lead to emergence of new nations and religions?

The Lost Vikings

This program trys to discover why a colony of Vikings, after nearly four hundred years of settlement, would disappear suddenly from the coast of Greenland.

What Happened to the Hindenburg

An examination of what really caused the explosion of the Hindenburg zeppelin.

Cannibalism in the Canyon

The Anasazi people of the American Southwest were once thought to be a model society, but now it seems they may have practiced ritual cannibalism. This program explores the evidence for how they lived and why they disappeared.