In a lush jungle at the foothills of a volcano in Indonesia's Aceh province, the song of gibbons in the trees mixes with the laughter of the seven forest rangers trekking below them. An hour into their patrol, the rangers spot another mammal in the forest with them.
“Where are you going? What are you doing?” they pleasantly ask a man walking past, farming tools in hand. “Remember to not cut down trees wherever you go, OK?”
