Robert Freling has set his sights on the ambitious goal of providing clean, sustainable solar energy to the world's two billion people who currently go without. As the executive director of the Solar Electric Light Fund (SELF), he works toward his goal with projects that range from powering schools and health clinics to providing access to clean water through solar-powered pumps.

Ecologist and leading biodiversity conservationist Dr. Sarah Otterstrom illustrates the power of collaboration to combat climate change. Through partnerships, employment generation and environmental education for communities in western Nicaragua, Otterstrom finds ways to sequester carbon and return pastureland to native forest, creating an environment that benefits wildlife and people alike.

Renewable bamboo, coconut waste and sawdust aren't usually used as fuels for factories, but in the northeast Brazilian Atlantic rainforest, ecological expert Stefano Merlin is pushing local factories to do just that. Leading a major fuel-switching initiative that blends social and environmental responsibilities with emission reductions, Merlin hopes that his most recent work will create what he calls in this address "a long-term biomass supply for the future."

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