We’re Exxon heavy this week but with good reason. First, a former executive explains why major oil companies, particularly Exxon, have reversed course and are embracing decarbonization initiatives. Secondly, Exxon kicked off the new year with a counteroffensive against its climate critics, filing a defamation lawsuit against the California attorney general and several environmental nonprofits. Hold on, folks, we’re in for a wild ride. – Traci Purdum, editor-in-chief