Let's get mathematical!

Hold onto your... well, you get it.

Don't tell France her husband's dead!

Learn about a sexy man, why not.

Do you have what it take to be England's Next Top Court Jester?

Sometimes ya gotta rise up.

The Professor shares the story of Policarpa, a revolutionary teenage sewing spy.

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 dissects the Baltimore Plot, the other attempt to assassinate Abraham Lincoln.

The Professor recounts what the Black Death was like, consulting a rat and Death himself.

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A White Star Line employee survived the sinking of both the Titanic and its sister ship - what do the Professor and a notorious propeller have to say about it?

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The Professor recounts how a regular counterfeiter attempted to con the world's most intelligent person - and almost got away with it.

The Professor delves into an old catfishing scheme and the role it played in parting a queen with her head.

The Professor takes his first foray into ancient history with the destruction of Pompeii by the singing Mt. Vesuvius.

The Professor tells the tale of an eventful year at the Olympic Games.

In a spooky season finale, the Professor recalls that time those people ate each other in the mountains.

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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.

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France is at it again.

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