Animals That Changed History
Animals That Changed History - Season 1 - Plagues: For most of our history, people have fallen victim to crippling disease, and not had a clue where it came from. Despite our best efforts, we are vulnerable - not, perhaps, to lions, tigers, and bears - but more to the killers we can't even see. In America during the early 1980s, a mysterious new disease claims the lives of 159 people, most of them gay men.