NOVA
Season 50 Episode 12 - Ancient Earth: Frozen
700 million years ago, Earth was a giant snowball cloaked in ice from pole to pole—a global deep freeze that held the planet in a stranglehold, threatening the survival of the earliest complex life. How did life manage to hold on in this forbidding world? Leading scientists investigate how this catastrophe may have become a catalyst for life to evolve in creative new ways as it bounced back from the brink—setting the stage for the astonishing complexity we see today.
Episodes in Season 50
London Super Tunnel
54 min
Star Chasers of Senegal
54 min
Ancient Builders of the Amazon
54 min
New Eye on the Universe
54 min
Weathering the Future
54 min
Chasing Carbon Zero
54 min
Saving the Right Whale
54 min
Hidden Volcano Abyss
53 min
Your Brain: Perception Deception (1)
54 min
Your Brain: Who's in Control? (2)
54 min
Ancient Earth: Birth of the Sky
54 min
Ancient Earth: Frozen
54 min
Ancient Earth: Life Rising
54 min
Ancient Earth: Inferno
54 min
Ancient Earth: Humans
53 min
Inside China's Tech Boom
53 min
The Battle to Beat Malaria
54 min
Lee and Liza's Family Tree
54 min