Deep in the jungles of Indonesian Borneo is the remote region of Kapuas Hulu, a 12-hour drive along narrow, twisting roads from the nearest city. Until recently, most villagers here eked out a living at nearby rubber plantations or gold mines. Now, thanks to the opioid epidemic in the US, the demand for coffee-like evergreen plant kratom has turned Kapuas Hulu into a boom town. (Dimas Ardian / Bloomberg)
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