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Last year, I went to visit some of my carbon emissions.
I flew to Reykjavik, rented a car and drove east across a series of ancient lava fields. Eventually, I got to a power plant, where, out back, was what looked like a giant air conditioner. The unit was sucking carbon dioxide out of the air and then feeding it into a pipe that ran deep underground.
Half a mile beneath the surface, the carbon dioxide was supposed to react with Iceland’s volcanic rock and turn to stone. I had paid the company that built the machine, a firm called Climeworks based in Switzerland, several hundred dollars to capture a ton of emissions and it felt oddly satisfying to imagine them, now in a solid form, buried beneath my feet. (If the carbon wasn’t mine, exactly, at least it was somebody’s!)