Reuters: Twenty years ago, when crude oil was gushing out of the wrecked Exxon Valdez supertanker and Prince William Sound was being blackened by what would become the nation’s worst tanker spill, oil giant Exxon Corp was vilified in Alaska. Bumper stickers said the corporation’s name was the “sign of the double-cross.” A sarcastic T-shirt took jabs at the company’s perceived arrogance, proclaiming: “Exxon: We Don’t Care. We Don’t Have to Care.” Today, Exxon Mobil Corp, as the company …