The scaling up of this basaltic carbon storage method requires substantial quantities of water and porous basaltic rocks.
Key questions (to my mind) - How much does it cost? - What, if any, are the side-effects? - Is it more effective than tackling the causes of the problem?
Want a summary? 'Experiment 'turns waste CO2 to stone' news report Or you might be able to listen to a BBC world service story about it here, including interview with the lead scientist, Juerg Matter (0.27 - to 5.55 mins).