Season 28, Episode 4: In an ancient Mayan arena, enemies of notorious King Yax K'uk Mo square off in a ball game that appears much like modern soccer. But in this fateful contest, winners live and losers lose their heads.

Season 31, Episode 6: Imagine handling a medical emergency at the height of the Iraq War, beset by heat, sand, and frequent enemy attacks. NOVA heads into battle with the medics, nurses, doctors, and military staff of the 10th and 21st CaSH units.

Season 27, Episode 16: Tour the crumbling public baths of Rome to learn intimate details of what life was really like for ancient Roman citizens, and in the process, discover the engineering feats that made these baths such an impressive achievement.

Season 27, Episode 14: Travel to Easter Island to discover the secrets of this vanished civilization through the "moai," the massive headstones that these ancient islanders created to achieve peace and harmony, yet resulted in geological disaster.

Season 30, Episode 15: Orville and Wilbur Wright were remarkable inventors who designed and built their own wings, steering devices, engines, and wind tunnel. But just how did they construct such an impressive flying machine?

'NOVA' Explores The Arctic Dinosaurs