The civil trial against BP for the biggest oil spill in US history begins shortly, adding to the oil industry's long legacy of environmental disaster.<br /><br />The explosion of BP's Deepwater Horizon rig in the Gulf of Mexico is one of the worst on record.<br /><br />An estimated 4.1 million barrels of oil poured into the water over 87 days in 2010.<br /><br />Al Jazeera's John Terrett reports from New Orleans.
