"We can't hope that the silicate thermostat will save us from CO2 caused warming. This reaction
is damn slow by our standards. It will, eventually, remove from the atmosphere the CO2 we have emitted, but it will take tens of thousands of years, at the very least. Look at thesesimulations by Dave Archer and you see what the problem is:
See? part of the CO2 we have emitted in the atmosphere will still be there in 40,000 years from now. Actually, it will stay there much longer. So, you see how important it is the reaction that I showed to you. The silicate weathering reaction is what keeps "Gaia" alive - better said, it is Gaia. And don't make the mistake of thinking that Gaia is a goddess and that, somehow, she cares about us. No, it is more correct to say that Gaia doesn't give a damn about us - which is what you'd expect from a chemical reaction, after all. It is us who have been tampering with this chemical reaction and it will be us who will have to face the consequences.
In the end, we can't hope to force the planet to do what we want it to do. So, we must learn to live with the flow of the Earth's cycles. For that, we must know a little chemistry my idea today was to show to you a bit of this chemistry. But more than chemistry, we must learn our limits, otherwise we won't survive for long.
This is our Earth, not a fantasy planet, let's try to keep it the way we found it."