Climate Change: End of the First Act?

One way or another, that existential challenge is now moot. A recent article in Science (314:452-454) suggests that atmospheric engineering (creating reflective sulfur aerosols) could counteract global warming, and a recent Ph.D. dissertation by Joshuah Stolaroff at Carnegie Mellon University, entitled Capturing CO2 from Ambient Air: A Feasibility Assessment, shows that capture of CO2 from ambient air is feasible today using known technologies. The latter estimates an approximate cost (non-optimized) of some 80 to 250 dollars per ton of CO2 reduction; further research and operating experience could reduce these numbers dramatically (higher costs had been a concern with this technology previously).

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