This story was originally published by Atlas Obscura and is reproduced here as part of the Climate Desk collaboration. In the lush jungle of Malaysia’s Penang Island, a primate makes its way through the forest’s canopy. A layer of fog sits among the trees and the humid smell of damp soil—mixed with excrement near the primates’ recent locations—lingers, while the sounds of cicadas, birds, and other forest animals reverberate.