Little Ice Age: The Year Without a Summer - World History - Part 4 - Extra History
10:32
Shootout at the OK Corral: The Showdown - US History - Part 2 - Extra History
10:49
The Little Ice Age: Climate Change - World History - Part 1 - Extra History
11:12
Curing Tuberculosis - The Hero Koch - Part 1 - Extra History
23:23
Mount Tambora: The Year Without a Summer
42:44
The Year Without a Summer (1816 to 1824)
27:20
Why Don’t Railroads Need Expansion Joints?
9:58
Shootout at the OK Corral: Why it Went Down - US History - Part 1 - Extra History
18:40