people are also sleeping on another reality: spacex starship will work and space launch is about to get insanely cheap. so *space based* methods for solar radiation management also unlock given the cost structure + payload capability.

Matt and Noah's sunny takes on carbon capture are driven by opposition to the most affordable approach to reducing CO2 levels -- using taxes to discourage extraction -- not by meaningful success beyond a tiny amount of sequestration in the course of extracting more carbon.

We should definitely mess with the ocean. It will definitely work out great. What could go wrong?

I’ve always been partial to the idea of the worlds largest nuclear plant + worlds largest desalination plant used to green the Sahara with useful crops. Completely based on some sort of Lawrence of Arabia vibes.

I think you mean "raise the pH", not lower (sorry)

Way easier to not put it in the air in the first place.

AGW is a British-origin scam to pillage western consumers while inhibiting modernization of less developed countries by buying off their leaders with carbon credits. This keeps the price of commods low for western mfrs. Just a modernized form of colonialism. Soon to end.

pH would be raised as someone else said. But interesting idea, had not heard of this! Seems difficult / ecologically risky to do at any scale