Paolo Wilczak banked his two-seat airplane above a grid of flat, industrial land in West Texas. About 60 meters below, I saw a bright flash of orange. It was a “flare”—a tall, vertical pipe beside a commercial oil well and storage tanks that was spitting flames into the windy afternoon air. The pipe was burning off unwanted gases, largely methane, that had risen from belowground with the oil. “Let’s see if this flare is doing its job,” Wilczak said, his voice barely audible above the plane’s loud single engine.