A raft of thin-film silicon bubbles deployed from Earth into outer space and stretching to the size of Brazil could potentially block the Sun’s solar radiation from further warming Earth.
Possibly helping to not only stave off climate change but potentially reverse it. 

This new “space bubbles” plan offered by scientists at the Massachusetts Institute of Technology rifts off a concept first offered by astronomer Roger Angel.

The multidisciplinary team of architects, civil and mechanical engineers, physicists and material scientists have worked on the technical and social aspects of what the group calls a “planetary-scale project” in an effort to find a non-Earth-bound solution to climate change.

https://www.popularmechanics.com/space/a40486004/space-bubbles-climate-change/