Exxon's bonkers ideas for saving the planet. Possible side effects include: an uninhabitable Europe.
https://www.topic.com/giant-mirrors-ocean-whitening-here-s-how-exxon-wanted-to-save-the-planet
Honestly, though, we're going to get desperate and do some wild geoengineering at some point. We won't wait to consider the consequences, but the alternative will be extinction.