For most people, puzzles are a fun, fascinating diversion. Yet throughout history, they've also played a crucial role in the great game of espionage. Join Ben, Noel and Max as they welcome their returning guest A.J. Jacobs, author and creator of The Puzzler podcast, to learn more about the history of puzzles, codes and spies in part one of this special two-part episode.

The Fascinating History of Fountain Pens
36:32

CLASSIC: Meet Albert Cashier, the Trans Man Who Fought for the Union in the Civil War
28:25

Ridiculous Stuff We Didn't Get To in 2026, Part Two: Apple Trees, Ice Cream Wars and Weird Nuclear Gadgets
28:25