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Dynamic Planet

Finding Methane Bubbles in Permafrost

Season 1 Episode 4 | 2m 40s

The ground is made up of both ice and frozen soil called permafrost. As the permafrost thaws, the ground sinks and floods. The ice traps gases bubbling up from the decomposing permafrost. Methane traps 30 times more heat in the atmosphere than C02. As the world gets hotter, the permafrost melts faster 鈥� releasing ever-greater quantities of this dangerous greenhouse gas.

Extras
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Big Cats 24/7
Season 2 Preview
Big Cats 24/7 is back in the stunning Okavango Delta, revealing the dramatic lives of its big cats.
Preview: S2 | 0:30
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Professor T
Season 4 Preview
Professor Tempest and the police return to solve more complex and intriguing crimes.
Preview: S4 | 0:30
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Great Performances
鈥淪usanna, or via, sortite鈥� from "Le Nozze di Figaro"
Joshua Hopkins, Federica Lombardi, and Olga Kulchynska sing an excerpt from the Act II trio.
Clip: S52 E22 | 1:53
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The Great American Recipe
Episode 6 Preview
It's the finale and two rounds of cooking remain before one of the finalists gets named the winner.
Preview: S4 E6 | 0:30
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Daniel Tiger's Neighborhood
Daniel Uses the Train Station Bathroom
Daniel learns all about how he can use the bathroom at the train station.
Clip: S7 E3 | 3:15
Watch • 0:51
Daniel Tiger's Neighborhood
"You Can Use a Different Bathroom" Song
A song about how if you need to go potty someplace new, you can use a different bathroom.
Clip: S7 E3 | 0:51
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Daniel Tiger's Neighborhood
O Visits Fairytale Bathrooms
O imagines that he can go see all types of fairytale bathrooms!
Clip: S7 E3 | 0:58
Watch • 1:38
Daniel Tiger's Neighborhood
Sienna Uses The Potty at a Music Festival
Sienna goes to a festival with her family and learns to use the potty at a public event!
Clip: S7 E3 | 1:38
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Daniel Tiger's Neighborhood
Jodi Uses the Potty at a Concert
Jodi is at the neighborhood concert and learns how she can use an outdoor bathroom there!
Clip: S7 E3 | 1:57
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Daniel Tiger's Neighborhood
"If Something Seems Hard To Do" Song
A song about how if something seems hard to do, you can try it a little bit at a time.
Clip: S7 E15 | 1:03
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