One potent tributary in the surging cocaine pipeline begins in the mountains of Cauca province, where nearly every plot of ...

For Sebastian Curbelo, a 31-year-old in treatment to wean himself off coca paste -- the main ingredient in cocaine, "the message he (Francis) left is that it is possible to help people who have hit ...

a concoction called coca base or coca paste. At one roadside lab, men in tall rubber boots mulch the leaves underfoot into dust. They mix it with gasoline, lime, sulfuric acid and other components ...

For Sebastian Curbelo, a 31-year-old in treatment to wean himself off coca paste -- the main ingredient in cocaine, "the message he (Francis) left is that it is possible to help people who have ...