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Explain (in 250 words roughly), the Geo-engineering idea mentioned in the video   

Why are we altering the sky? And/or why do we need to alter the sky?   (are we altering it in a good way or in a bad way? 

What is the benefit of altering the sky, causes & effects, particles, aerosols, stratosphere, etc?)   

How would you be part of the solution to environmental pollution