Environment BP Paid a Steep Price for the Gulf Oil Spill but for the US, a Decade Later, it's Business as Usual The largest offshore oil spill in U.S. history began ten years ago, on April 20, 2010. Eventually, oil coated more than 1,000 miles of coastline in six states, and covered over 40,000 square miles. By David M. Uhlmann / 12 May 2020
