khan academy AP environmental science - Climate Emergency: Feedback Loops - Part 3: Permafrost

5.0 (2)

19 learners

What you'll learn

This course includes

5.5 hours of video
Certificate of completion
Access on mobile and TV

Summary

Keywords

permafrost thaw methane tundra heat trapping greenhouse gas sustainable future climate change protests climate change climate emergency feedback loops global warming

Full Transcript

Subtitled in 20 languages. Permafrost, an icy expanse of frozen ground covering one-quarter of the Northern Hemisphere, is thawing. As it does, microscopic animals are waking up and feeding on the previously frozen carbon stored in plant and animal remains, releasing heat-trapping gases as a byproduct. These gases warm the atmosphere further, melting more permafrost in a dangerous feedback loop. With permafrost containing twice as much carbon as the atmosphere, its thaw could release 150 billion tons of carbon by the end of the century. Like us on Facebook - https://www.facebook.com/feedbackloopsclimate Follow us on Instagram - https://www.instagram.com/climatefeedbackloops/ Follow us on Twitter - https://twitter.com/climateloops

Continue this lesson in the app

Install CourseHive on Android or iOS to keep learning while you move.

Welcome