Breaking news: You need not worry about the safety of offshore oil drilling. How do I know this? Well, let's just say a hat tip is in order for Exxon's new blog, Perspectives, which launched today with a post about the Deepwater Horizon disaster. "This devastating chain of events is far from the industry norm," proclaims Exxon blogger Ken Cohen, who's also the oil giant's vice president of public and government affairs. "We all need to understand what occurred on this occasion that did not occur on the 14,000 other deepwater wells that have been successfully drilled around the world."