Reduce emissions. That’s cheaper, more effective and safer than any other method.

Geo engineering commonly only tries to fix temperature. While that would be a big achievement, it does not change the CO~2~ ppm. And that translates to ocean acidification. Which translates to mass extinctions. Which is still an existential threat also for land living species, and us.

There is only one solution to fix both (and many other, related / caused problems): Fix the source.

We cannot engineer our way out of all the individual symptoms. Just leave fossil fuels in the ground.