Facing a reckoning over their contribution to the climate emergency, companies are coming out with a record number of pledges. More Fortune 500 companies have adopted emissions targets and one in five have science-based targets. At least one fifth of the world’s 2,000 largest public companies have now made some kind of “net zero” pledge to cancel out their carbon emissions, and are investing billions in clean energy, moving to electric vehicles, pledging to halt deforestation, and urging governments to…