"This is a soya bean," the Biangai villager explained, "a money bean."
Since the start of colonial gold mining in the early 1920s, the Biangai villagers of Elauru and Winima in Papua New Guinea have moved away from planting yams and other subsistence foods to instead cultivating coffee and other cash crops and dishing for tradable flakes of gold. Decades of industrial gold mining, land development, conservation efforts, and biological...