Across the globe, shareholders, employees, and customers are demanding climate action from big corporations. And despite the United States bailing from the Paris Agreement last year, firms are responding, even leading the movement. From Silicon Valley to Wall Street, companies are stepping up by committing to emissions reductions, funding capital-intensive new technologies, and using their influence to incite wider action. Are they motivated by more than a warming world? Can the private sector bear the weight of this massive responsibility? Leaders from major American companies share their game plans for the fight against climate change.