Secrets of the Dead 
Catastrophe! - Part 2
Season 1, Episode 2 of 5Secrets of the Dead presents a rebroadcast of part 2 of Catastrophe! For nearly a century, humans huddled in a state of ignorance and fear. Known as the Dark Ages, societies became plagued with disease, famine and economic depression. The program follows forensic scientists as they attempt to discover if an actual event, such as an asteroid or a volcano, may have triggered this bleak period of human history. In part two, science writer David Keys travels to Mexico and Europe to examine both the fall of Teotihuacan and the Anglo-Saxon victory over the Celts.
