
On the eighth anniversary of the Deepwater Horizon rig explosion that set off the worst oil spill in U.S. history, thousands of workers BP hired to clean up its mess say exposure to oil and chemicals made them sick.On the eighth anniversary of the Deepwater Horizon rig explosion that set off the worst oil spill in U.S. history, thousands of workers BP hired to clean up its mess say exposure to oil and chemicals made them sick.