6 years ago - Hundreds of students from Los Angeles STEM programs will participate in one of the largest student-driven programs ever launched to protect the world’s rainforests. Rainforest Connection’s “Planet Guardians” program will guide middle schoolers in building solar-powered listening devices using old smartphones. These “Guardian” devices will be installed high in the trees of fragile rainforests to capture sounds of illegal logging and alerting forest rangers in real time.