It’s around 4 a.m. on the island of Borneo, and a few researchers have already left camp. In darkness, they creep along boardwalk trails: lines of single planks of wood that offer solid footing in the swamp forest. Where the planks end, the scientists step gingerly into knee-deep muck and toe along tree roots. The team hopes to reach a slumbering orangutan before she wakes and urinates. They’ll try to catch the stream in a baggie on a stick, as the animal pees from her leafy nest in the trees….
