Positive Feedback Loop
Updated: 1/24/2020
Positive Feedback Loop
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Storyboard Text

  • Mr. Nye, why is the permafrost melting? I think that polar bear can see me now.
  • It melting due to increased increased global mean surface temperatures (GMST).
  • It won't. As the ice melts the ice albedo is greatly reduced, allowing the ground and oceans to warm up, further increasing the rate and extent the permafrost will melt. I'm afraid you'll have to find a new home.
  • Will it come back? I can't hide without the snow and ice.
  • It's melting really fast!
  • In 20 years, there will be no more arctic ice. This is what is called a positive feedback loop.
  • I see you!
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