Tilden Chao is a rising senior at Yale College from Ithaca, New York, majoring in economics and pursuing a certificate in Energy Studies. Tilden grew up in a birdwatching family and fell in love with environmental protection during trips to sanctuaries and field stations. At the CC Lab, Tilden primarily works to develop strategies to phase down fluorinated refrigerant gases, super-pollutants thousands of times more potent than carbon dioxide. He directs the Yale Refrigerants Initiative, the student group working to implement refrigerant management solutions on campus. Beyond school and refrigerants, Tilden loves backpacking, tossing baseballs around with friends, and playing the saxophone.