NOVA travels to Lake Baikal, the world's oldest and deepest lake, containing one-fifth of all the fresh water on Earth. Investigating Baikal from above, below and all around, NOVA charts its dramatically changing environment over the course of four seasons.

NOVA Season 22 Episodes...

• s22e01 - The Great Wildlife Heist
• s22e02 - Secret of the Wild Child
• s22e03 - Haunted Cry of a Long Gone Bird
• s22e04 - What's New About Menopause
• s22e05 - The Tribe that Time Forgot
• s22e06 - Killer Quake!
• s22e07 - Buried in Ash
• s22e08 - Rescue Mission in Space
• s22e09 - Journey to the Sacred Sea
• s22e10 - In Search of the First Language
• s22e11 - Mammoths of the Ice Age
• s22e12 - Vikings in America
• s22e13 - Little Creatures Who Run the World
• s22e14 - Nazi Designers of Death
• s22e15 - Siamese Twins
• s22e16 - Mystery of the Senses: Hearing
• s22e17 - Mystery of the Senses: Smell
• s22e18 - Mystery of the Senses: Taste
• s22e19 - Mystery of the Senses: Touch
• s22e20 - Mystery of the Senses: Vision
• s22e21 - The Universe Within
• s22e22 - Making of a Doctor
• s22e23 - Fast Cars

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.