Sun, Nov 22, 2015
Germs require very specific conditions to survive. So too plagues. Unsanitary, medieval European cities full of diverse disease-ridden livestock and large numbers of closely packed human incubators were perfect. Everywhere the human survivors went plague went with them.
Sun, Aug 8, 2021
CGP Grey explains the tale of Tiffany.
Sun, Feb 3, 2019
There must be a faster way to board airplanes. In fact there are several. But people being people the best one will never fly.
Sun, Feb 28, 2016
For a hunter gatherer having some animals is a definite plus but they have to conform to some very strict qualifications. Horses have them. Zebras and almost every other animal don't
Mon, Nov 2, 2020
CGP Grey explains why hexagons are the best.