7:54
These Ancient Footprints Rewrite Human History
PBS Terra
8:23
This Bay Moves 100 Billion Tons of Water Every Day
10:59
We Crashed the Ocean’s Freakiest Breeding Ground
Why These Insects Live Inside Death Traps
8:01
There’s Something Weird Going On With the Northern Lights
7:08
What Turned These Ancient Trees to Stone?
What Is Killing These Indestructible Swamp Trees?
10:07
This Is Not a Forest
8:03
Truffles Are Hiding a Dirty Little Secret
7:07
This Sacred Canyon Is Alive. And It's Changing Shape
5:58
Why Is NASA Interested In This Upside Down Cave?
10:04
This Volcano Won't Stop Erupting
7:00
What NASA Is Looking For In Yellowstone National Park
7:34
The Story Behind This Giant Rock in the Middle of a Field
8:27
Why Does This Sea Glow in the Dark?
9:06
Trillions of Animals Rely On This Lake (And It's Drying Up)
5:42
You Aren’t Paying Enough Attention to Moss
7:06
Why Do Hundreds of Icebergs Keep Visiting This Town?
7:58
Redwoods Shouldn't Be So Tall. Here's Why They Are
