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Untold Earth

From PBS NATURE and Atlas Obscura, Untold Earth is a documentary series dedicated to unpacking the stories behind North America’s strangest, most unique natural wonders.

Redwoods Shouldn't Be So Tall. Here's Why They Are WATCH: 7:30
S1E1 | Redwoods Shouldn't Be So Tall. Here's Why They Are
Redwoods Shouldn't Be So Tall. Here's Why They Are
What makes the Coast Redwood, a tree as old as the dinosaurs, epically singular in nature?
Why Do Hundreds of Icebergs Keep Visiting This Town? WATCH: 7:05
S1E2 | Why Do Hundreds of Icebergs Keep Visiting This Town?
Why Do Hundreds of Icebergs Keep Visiting This Town?
What are icebergs doing so close to land and why must we keep an eye on them?
You Aren’t Paying Enough Attention to Moss WATCH: 5:44
S1E3 | You Aren’t Paying Enough Attention to Moss
You Aren’t Paying Enough Attention to Moss
At 450 million years old, moss may hold the key to surviving our rapidly warming planet.
What Are These Strange Towers Growing Out of This Lake? WATCH: 8:54
S1E4 | What Are These Strange Towers Growing Out of This Lake?
What Are These Strange Towers Growing Out of This Lake?
Over half a million years old, the story of Mono Lake is one of survival.
What Makes The “Northern Lights of the Sea” So Magical? WATCH: 8:26
S1E5 | What Makes The “Northern Lights of the Sea” So Magical?
What Makes The “Northern Lights of the Sea” So Magical?
An ancient and modern mystery, what about bioluminescence inspires such obsession?
The Story Behind This Giant Rock in the Middle of a Field WATCH: 6:57
S1E6 | The Story Behind This Giant Rock in the Middle of a Field
The Story Behind This Giant Rock in the Middle of a Field
At 50 million years old, the origins of Devils Tower or Bears Lodge remains a mystery.
What NASA Is Looking For In Yellowstone National Park WATCH: 6:41
S1E7 | What NASA Is Looking For In Yellowstone National Park
What NASA Is Looking For In Yellowstone National Park
At 87º Celcius, the Grand Prismatic Spring is a beacon of microbial life and discovery.
This Volcano Won't Stop Erupting WATCH: 9:12
S1E8 | This Volcano Won't Stop Erupting
This Volcano Won't Stop Erupting
What does one of Earth's harshest environments teach us about planet survival?
This Upside Down Cave Is a Microscopic Warzone WATCH: 5:57
S1E9 | This Upside Down Cave Is a Microscopic Warzone
This Upside Down Cave Is a Microscopic Warzone
Microbial warfare has been raging for thousands of years deep below the Chihuahuan Desert.
Why Antelope Canyon Never Looks The Same Twice WATCH: 6:49
S1E10 | Why Antelope Canyon Never Looks The Same Twice
Why Antelope Canyon Never Looks The Same Twice
What does it mean to preserve a place that is defined by it's impermanence?
Truffles Are Hiding a Dirty Little Secret WATCH: 7:11
S1E11 | Truffles Are Hiding a Dirty Little Secret
Truffles Are Hiding a Dirty Little Secret
How are truffles key to the survival of the forest ecosystem at large?

This Is Not a Forest WATCH: 10:06
S2E1 | This Is Not a Forest
This Is Not a Forest
Meet Pando, an ancient tree in Utah that has grown into one of Earth's largest living wonders.
How Louisiana's Mega Swamp Breaks Hurricanes WATCH: 7:53
S2E2 | How Louisiana's Mega Swamp Breaks Hurricanes
How Louisiana's Mega Swamp Breaks Hurricanes
Discover how The Atchafalaya Basin protects Louisiana's coast from hurricanes.
What Turned These Ancient Trees to Stone? WATCH: 7:07
S2E3 | What Turned These Ancient Trees to Stone?
What Turned These Ancient Trees to Stone?
What secrets can we unearth about the future of our planet from this petrified forest in Arizona?