Open-air carbon capture economically unfeasible for decades

See the report from the American Physical Society. They spotted the not-hard-to-spot issue that it's a lot easier to capture CO2 at concentrated power sources than in dilute amounts in the atmosphere, and that transport doesn't overcome that issue (UPDATE: on second look, doesn't seem to deal with transport - the one advantage of open air capture is that you can position it where your sequestration sites are instead of where your power plants are. Good luck with having that overcome sequestration as a cost savings, though).

Hansen's idea of carbon sequestration from biomass power isn't affected by this, since he still relied on point source capture and can still achieve carbon negative results. Roger Pielke Jr. doesn't do so well however in his dream of an unnamed technological solution that will make all the problems go away for a low low cost. The report's dated April 28th, and we'll see when he gets around to discussing it.