Over the last few years, corporate executives and investors have enthusiastically jumped into the fight to address climate change with hundreds of the world’s largest companies committing themselves to eliminating their carbon footprints by the middle of the century—a goal known as net zero. That enthusiasm is now on display at COP27, this year’s U.N. climate summit, where executives from some of the world’s largest and most influential companies have gathered in the resort town of Sharm El-Sheikh, Egypt to tout their progress and engage with delegates from around the world.