This will eliminate the fuel burning CO2, but will not eliminate the CO2 driven off by calcination https://en.wikipedia.org/wiki/Calcination https://en.wikipe

This will eliminate the fuel burning CO2, but will not eliminate the CO2 driven off by calcination https://en.wikipedia.org/wiki/Calcination https://en.wikipedia.org/wiki/Calcination. Still it is a start and if they can create another concretion chemistry without driving off CO2 it will become a total win. This might mean a coupled CO2 trapping method?