In the midst of the worst drug epidemic in American history, the U.S. Drug Enforcement Administration's ability to keep addictive opioids off U.S. streets was derailed -- that according to Joe Rannazzisi, one of the most important whistleblowers ever interviewed by 60 Minutes. 

60 Minutes' Bill Whitaker reports on the high incidence of earthquakes in Oklahoma, where oil and gas production is injecting vast amounts of wastewater into the earth. "Earthquake Alley" aired on May 8, 2016.