Ancient mechanical devices are examined: A jar that appears to be an electric battery, a flour mill in France that is run by waterwheels, and Archimedes use of solar power to defeat the Romans.

The lake Nemi ships, large Roman vessels that were salvaged from the lake in the 1930s and burned in 1944, are discussed, including technological discoveries from the ships.

Explores ancient medical techniques and possible new applications in the modern era. Techniques reviewed include blood letting by leeches, reading from a torpedo fish, trepanning to relieve pressure on the brain, and Roman battlefield surgery and tools.

This episode investigates the Antikythera Mechanism, a computer-like device that may have been used to calculate the movements of stars and planets. It also highlights ancient inventors Archimedes and Ctesibius.

An examination of ancient robotics includes a look at the automata of ancient China, the Hellenistic engineers Heron and Philon, the Kurdish engineer Al-Jazari, the Byzantine Empire, and Leonardo da Vinci.

Warfare technology is examined, including the Helepolis, a square fortified tower on wheels; and "Greek Fire," an incendiary liquid that stuck to people and objects and couldn't be extinguished with water.