Glasses: A Brief History of Vision Correction
55:10
Best of The History Guy: Invention
15:18
A History of Socks
18:39
Why Sugar Always Twists Light To The Right - Optical Rotation
59:31
The Best of: Weird Crime, Volume 2
56:48
Best of the History Guy: Weird Crime
16:59
Sliced Bread and the Second World War
28:51
Exploding Space Radiation Literally Distorts TIME
15:08