On: A new generation of environmentalists is learning ...

[saagarjha]

The amount of CO2 is orders of magnitude more than the amount of radioactive waste; you cannot just build “one factory in Nevada” and sequester all the carbon dioxide produced.

[v_lisivka → saagarjha]

We need to capture about 1 trillion of tons of CO2 to return to sane levels, and then capture about 25 billion tons of CO2 annually. It looks doable.

See http://www.climatecentral.org/news/first-commercial-co2-capt... .

[Graham67 → v_lisivka]

That process absorbs CO2 from the atmosphere at low concentrations (400 ppm) onto stones coated with X-material. Later the stones are heated (using more fuel) to release CO2 at much higher concentrations (more than 75%). Then what? It is a gas. You need to bury the carbon. They suggest feeding it to greenhouses, to grow food, which re-releases it later.

[acidburnNSA → saagarjha]

Six orders of magnitude, to be precise. Nuclear fuel has 2 million times more energy per mass than any chemical fuel or storage system.