Fifth anniversary of Deepwater Horizon explosion; BP oil spill

Five years after the Deepwater Horizon explosion—the worst man-made disaster in the Gulf of Mexico that killed 11 workers and spilled 42,000-210,000 gallons of crude oil daily for nearly three months—scientists at University of South Florida St. Pete continue monitoring the spill's lasting effects on the ecosystem, having discovered fish with skin lesions near the spill site as evidence of persistent environmental damage.