CO2 turned into stone in Iceland in climate change breakthrough

[NickB79]

11. The million-dollar question: does it scale well?

How much carbon can these rocks absorb per year at max carbon sequestration rates, assuming we go full-bore into exploiting them?

How much carbon can these deposits ultimately hold before they are saturated?

Because bear in mind we're currently emitting something like 30 BILLION tons of carbon per year. Just to halt atmospheric carbon at current levels, we need to scale this technique up to sequester this much carbon annually. To get back down to a safe 350 ppm CO2 before positive feedback loops kick in and make global warming irreversible for tens of thousands of years, we'd need to sequester HUNDREDS of BILLIONS of tons of CO2 per year.