Greenwashed rhetoric is such a staple of the oil industry that it’s easy to assume every energy executive talking about climate and the transition to a zero-carbon economy is just mouthing words. Barely a year after BP Plc Chief Executive Officer John Browne promised “action and solutions” on climate change in a 1997 speech, he led the then-biggest oil takeover in history with the acquisition of Amoco Corp. On his retirement a decade later, after years of rebranding about moving “beyond petroleum,” he left a base of oil and gas reserves more than twice the size of the one he inherited. So e...