As president of the Environmental Defense Fund, Fred Krupp has guided one of the leading global organizations that is championing causes and issues to protect our environment. Lord John Brown, the former CEO of bp is one of the preeminent voices in the energy industry today. Both men discuss what has changed with industry’s view of climate change and what progress they have seen from the energy and technology sectors from when they first met 25 years ago. What concrete steps are energy companies taking to reduce methane emissions? What will define the energy sector in the next 25 years?