The Morgenthau Plan

The Antikythera Mechanism (Encore)

Questions and Answers: Volume 3

The Speaker of the House of Representatives

The Zone of Death

NASA's Human Computers

Isaac Newton: The World's Most Famous Alchemist

Operation Valkyrie and the Plot to Kill Hitler

The Walled City of Kowloon

Parícutin: The World's Youngest Volcano

Apollo 13

The Pipe Organ

The Roman Triumph

Hi Ho Silver!

The Most Important Battles in History

Questions and Answers: Volume 2

The Mechanical Turk

The History of Credit Cards (Encore)

The Dumbest Game Ever Played

The Space Shuttle