Who are the innovators? The iconoclasts on the leading edge of their fields, breaking old rules, pioneering new strategies, and—well, let’s be honest—changing the world?

They are the 500 Echoing Green Fellows who hail from all corners of our world and are addressing the biggest social ills with the boldest solutions.

These social entrepreneurs have launched, and now lead, some of today’s most important social enterprises like Teach for America, City Year, SKS Microfinance, and a number of organizations just getting started like The Golden Baobab Prize, re:char, Blue Engine, and SHE.