Billy Parish is co-founder and president of Solar Mosaic, and co-author of Making Good: Finding Meaning, Money & Community in a Changing World. In 2002, Parish dropped out of Yale to found the Energy Action Coalition and grew it into the largest youth advocacy organization in the world working on the climate crisis. A serial social entrepreneur, Parish has helped launch dozens of clean energy-, youth-, and green jobs-related companies and organizations. He has been honored by Rolling Stone magazine as a “climate hero” and named on Utne Reader’s 50 Visionaries Who Are Changing Your World list. He is a fellow at Ashoka, the global association of the world’s leading social entrepreneurs.