The latest scientific discoveries are showcased in a documentary series, delving into topics such as theoretical physics, the catastrophic Chernobyl nuclear reactor, the devastating effects of Amazon deforestation, and groundbreaking medical breakthroughs.

1. Halley's Comet: Once in a Lifetime
Aired: Jan 21, 1986As the world gears up to witness Halley's Comet in 1986, amateur comet hunter...