The oil giant BP is back in court for the April 2010 accident that caused the worst offshore oil spill in U.S. history, killing 11 workers and leaking almost five million barrels of crude oil into the Gulf of Mexico. On Monday, the second phase of the trial began with lawyers accusing the oil company of lying about how much oil was leaking, failing to prepare for how to handle the disaster, and for not capping the leak quickly enough.

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