Exxon Mobile is a multinational company owned by widows, orphans, retirement funds and investors around the world. Their job is to find raw materials and produce energy products and chemicals. It is not Exxon's job to save the planet, it is Exxon's job to protect it's profits for it's shareholders.
If there is an answer for this mess (if there is a mess) it will come from the resources of companies like Exxon not groups like UCS (one of the organizations most responsible for there being no new nuclear power plants in the USA) decrying companies that will not toe their party line.