"It’s the big threat. A cheap, white powder — 50 times more powerful than heroin — which kills more than 70,000 people each year in the United States and countless others across the rest of the Western Hemisphere. EL PAÍS, in a long-term investigation that spanned two continents and included interviews with anti-drug czars in the U.S. and China, visited the clandestine laboratories in Sinaloa, where fentanyl is manufactured".......Read More at El Pais ➜ Also Read: How the United States got hooked on fentanyl