[fluoridation]

Is it possible even in theory to make carbon sequestration profitable? You're going to use a ton of energy to make something that's readily available and for which there isn't much use other than burning (which obviously can't be a use for this).

[whaaaaat]

Maybe we can do things that aren't profitable because we believe they are the right thing to do?

But carbon can produce biochar and and just be pumped directly back into the ground. Getting it out of the atmosphere is the use.