PBS recently ran a Frontline documentary entitled “Heat”, on climate change. A section of the movie describes the status of Carbon Capture and Storage (CCS) in the US, a technology that both the IPCC and the IEA consider necessary to achieve emissions reduction. I note that no tests have been run so far in the US to verify the technical feasibility, economic viability and safety of this option. Purely from the technical point of view, the task could be feasible, although extremely challenging. It’s the idea of storing huge amounts of CO2 underground or in the deep seas (less likely) that makes me doubtful. CO2 will need to be sealed away in carefully selected sites, but safety issues are only part of the picture.