Adolf Hitler's insane and evil policies changed the world more than anybody since Christopher Columbus. This episode details the horrors of World War II; explains how Hitler is to blame for the war; illustrates how Hitler made WWII even worse than other wars; and analyzes the effects of WWII for the remainder of the 20th Century and today.

It was the bloodiest battle ever in the Western Hemisphere. For 3 days in July 1863 Americans slaughtered each other on a terrible scale around a small town in Pennsylvania, where the honored dead "gave the last full measure of devotion".

Find out why Robert E. Lee invaded the north, and why he failed so terribly; why the civil war dragged on for almost two more years after this union victory; and how this conflict inspired one of the greatest speeches ever in the English language.

Galileo is considered the father of modern science. His discoveries included the laws of pendulums which led to the development of the first accurate clocks. But tragically, he was tried by the Inquisition of Rome for heresy. The science deniers of the Church threatened to burn him at the stake unless he recanted his claims that he could prove that Copernicus was right: that the Earth is not the center of the universe, that we live in a heliocentric system where the earth and the other planets revolve around the sun.