Your Old Phone Could Help Eavesdrop on Illegal Rainforest Loggers

How do you catch a logger in the dense, remote rainforest? For a long time, the answer has been satellites, which may sound high-tech, but actually means you're looking at photos of deforested land days after the loggers have made their getaway. A nonprofit called Rainforest Connection wants to turn old smartphones into solar-powered bugs that listen for chainsaws in real time.