But it’s one thing to be able to pull carbon out of the air and quite another to be able to pull this off at scale. Burning fossil fuels generates energy. Capturing CO2 from the air requires energy. So long as this energy comes from burning fossil fuels, it will add to the carbon that has to be captured. A second major challenge is disposal. Once

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My view on this has always been: The models are assuming that it exists at a large scale to solve for the climate problem, so we have an obligation to do the instrumental work to figure out if that’s possible to begin with.

We’re starting to do that, which I think is very good. The challenge with removing CO2 from the ambient air and putting it... See more

Carbon dioxide removal may be essential; it’s already built into the calculations of the IPCC. Under the current order, however, it’s also economically infeasible. How do you go about creating a $100 billion industry for a product no one wants to buy? The eggplants and the Snack-Gurken represented an admittedly jury-rigged solution. By selling its

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