Jordan Kassalow is the founder of VisionSpring, an organization with the goal of bringing affordable quality glasses to the 2.5 billion people worldwide who need them. He also co-founded EYElliance, a multi-sector coalition that drives the global strategy to increase

Gary Cohen has been a leader in the environmental health movement for thirty years. Cohen is President and Co-founder of Health Care Without Harm and Practice Greenhealth. Health Care Without Harm (HCWH) is working to transform healthcare worldwide to reduce

Having began in 1993, Nikhil Seth's career with the United Nations involved a number of positions, responsibilities and of course, achievements.  For instance, he served as Director of the Division for Sustainable Development, Department of Economic and Social Affairs (DESA) at

Tom Szaky is the CEO of TerraCycle, a social enterprise on a mission to eliminate the idea of waste. In 2001, Tom dropped out of Princeton University to launch a fertilizer company based on worm poop. Over the years, the

Pierre Ferrari is president and CEO of Heifer International, a nonprofit founded 75 years ago with the aim of helping the hungry. Over the course of these three-quarters of a century, Heifer has evolved into a global organization fighting to