HOUSTON — Darren W. Woods rarely makes headlines even though he is the chief executive of Exxon Mobil, the oil company that some people consider a top environmental villain and others think of as a vital engine of the U.S. economy.Few have taken seriously, or even noticed, that he is beginning to make promises to respond to climate change, which is at the very least a rhetorical break from his predecessors if not a substantive one.“What society demands, and appropriately so, is affordable, reliable energy that doesn’t have the emissions associated with today’s energy systems,” he …
