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Space shades are often touted as our last hope if our climate change situation gets too out of control. If we can't keep carbon emissions down, we could just block the sun. I hear this option get thrown out very casually, but I've never seen a realistic look at what that would look like. How big would it need to be? How much would it cost? Wound it even work? So I decided to take a serious deep dive.

Here's the link to the paper by professor Roger Angel:
https://www.pnas.org/content/103/46/1...

Animations and shade designs by Kimi Talvitie: Find more of his work on Twitter: @kimitalvitie

Ethan Siegel's take on Starts With A Bang:
  / ask-ethan-can-we-build-a-sun-screen-to-com...  

Watch this video ad-free on Nebula: https://nebula.tv/videos/joe-scott-su...


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