Recent climate modeling tells us that just eliminating fossil fuel emissions from the major sources will not be enough to meet our climate targets. We will have to actively clean up the atmosphere, both to make up for the emissions we can’t stop in time (fertilizer, airplanes, etc.) and to clean up the mess we are continuing to make. The scale is stunning – 10 billion tons a year by 2050. This amount is twice the weight of all the oil we extract in one year today. Can we develop an industry to remove carbon by 2050 that is twice the size of today’s oil industry? Roger will argue that we can.

Negative emissions technologies are being developed to address this need, and appear to be a major business opportunity. Major approaches include enhancing natural sinks like soil and forests; using biomass to accumulate carbon that is permanently stored; and building machines that remove CO2 by chemical means. In this talk, Roger will discuss the major ways we can remove CO2, and what we have learned about their costs and limitations.