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Is Permafrost the Climate Tipping Point of No Return?

Season 3 Episode 12 | 11m 49s

Arctic air is warming, causing scientists to worry that melting arctic ice and snow could also lead to a sudden permafrost thaw and release of carbon dioxide (CO2) and methane (CH4) that forms a climate tipping point or feedback loop. And the trigger temperature may be coming much sooner than expected.

Aired: 02/13/23
Extras
The cast play a game of "What's in the vet bag?" with sentimental props from the series.
Get ready for the all-new season, coming January 17, 2027 at 9/8c.
Miss Scarlet returns for Season 7, the final season, on January 17, 2027 at 8/7c.
Celebrate the legacy of Gene Wilder, the actor behind Willy Wonka and Young Frankenstein.
Watch Stephanie J. Block perform "What Child is This? with The Tabernacle Choir and Orchestra.
Stephanie J. Block and Sebastian Arcelus sing 'Merry Christmas Darling' with The Tabernacle Choir.
A beloved Christmas hymn gets a bold new twist in this festive organ and percussion showcase.
Ryan Murphy reimagines 'Go, Tell It on the Mountain' in a joyful orchestral setting.
Stephanie J. Block pairs two beloved classics that find comfort, joy, and gratitude in every season.
Sebastian Arcelus joins a joyful Christmas tradition in this vibrant Latin American holiday carol.
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