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5:13
YouTube
TED-Ed
Whatever happened to the hole in the ozone layer? - Stephanie Honchell Smith
Discover what caused the hole in the ozone layer, and how the Montreal Protocol helped restore it by banning harmful chemicals. -- In the 1980s, the world faced a huge problem: there was a rapidly expanding hole in the ozone layer. If it continued to grow, rates of skin cancer could skyrocket, photosynthesis would be impaired, agricultural ...
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