True story: in the heart of the CIA headquarters at Langley, Virginia, there's a puzzle no one has solved. In the second part of this special two-part episode, Ben, Noel and Max join up with returning guest A.J. Jacobs to learn more about the enigmatic sculpture known as Kryptos.

The Bizarre Parable of New Coke, Chapter One: Sweeter, Stranger, Strange
36:14

"Resting Bicycle Face": Bikes and Women's Rights
44:09

CLASSIC: How Oliver Cromwell Got Executed Several Years After His Death
26:40