Mass Hysteria Throughout History
4:50
Plant Diseases
7:55
True Stories About Chimps
7:30
Scandalous Popes of the Middle Ages
21:49
MASS PSYCHOSIS - How an Entire Population Becomes MENTALLY ILL
23:20
The History of the World According to 'Ancient Aliens'
7:39
History's Worst Non-Water Floods
7:46
Pre-Industrial Surgeries
33:43