Rig on fireA massive explosion occurred at 11 p.m. EST on Transocean's Deepwater Horizon oil rig, operated by BP, in the Gulf of Mexico. According to initial reports as many as 11 people are unaccounted for. Search and rescue operations are underway.From data available, this oil spill could easily be one of the worst in the last few decades - with a potential of causing more damage and destruction to environment and marine life than the Exxon Valdez in 1989
