What is not obvious, is that Earth has spent the preponderance of geologic time in what we would call an “Ice Age.”
Enjoy the warmth while you have got it.
I know this much, algae’s not the answer. Requires a ton of water, heat, and light.
Ironically, algae could be a wonderful substitute for carbon scrubbers for coal plants, which cost a ton ($400MM), and wear out.
Algae sequesters CO2, NO2 pretty well, and the BYPRODUCT is ethanol if you care to extract it.
Wanna hear the funny part? The carbon nazis don’t want to convert it to ethanol. The carbon is sequestered in the algae very nicely. What the carbon nazis want is to bury it in the ground. Guess what - nobody will underwrite the liability of it. Nobody is willing to dig the hole, put the slop in the ground, and then wait around to find out if it does any lasting groundwater damage.
I’m telling you, the whole business is a con.