Emus become the target as the Professor recounts Australia's great war.

Ryan and Ify each rack up millions of jelly beans from the generous Professor and Mansa Musa.

Scabs n Pus infect Puppet History as the Professor talks smallpox during the American Revolution.

It's off to the Philippines for the Professor to meet an impressive polymath who just wanted to write books but sparked a revolution.

The Professor travels back to Kievan Rus' to meet a vengeful female regent.

It's back to France to exorcise a possessed convent and tear down a wall.