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Author Topic: Addressing climate change  (Read 10218 times)

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Online Squidward von Squidderson

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Re: Addressing climate change
« Reply #300 on: March 27, 2020, 06:22:50 pm »
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Got a flashback to Toronto's downtown air 20 years ago, and how it cleared after 9/11.

Why did air quality get better after 9/11?
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