Plan for everything.
They will destroy the ozone layer before you can start a crowd funded initiative to develop a private space program that can launch enough satellite killers to make a difference.
Copper roofs.
https://www.digitaltrends.com/cool-tech/space-elon-musk-fcc-approval/
https://docs.fcc.gov/public/attachments/DOC-355102A1.pdf
Say goodbye to the coral reefs while you are at it.
http://articles.orlandosentinel.com/1992-12-21/news/9212210392_1_coral-bleaching-reefs-ozone
Oh look, I triggered the muh jew brigade.