this post was submitted on 14 Nov 2023
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Would we ever be able to use a material like this to reflect a significant enough portion of the light falling on Earth to reduce the total heat imparted by sunlight in a meaningful way? Could we use this as defacto ice caps to perhaps reduce global temperatures in any real way?
The only feasible plan we have for increasing the albedo of the planet overall is atmospheric engineering. Basically you can make a reflective cloud that’s millions of square miles in area, many orders of magnitude more cheaply than any other kind of structure.