Jeffrey Sachs is an economist and the Director of the Earth Institute at Columbia University. One of the youngest economics professors in the history of Harvard University, Sachs became renowned his work throughout the developing world and on the challenges of economic development, environmental sustainability, poverty alleviation and globalization. He has twice been named one of Time magazine's '100 Most Influential People in the World'. He has authored numerous books, including The End of Poverty and Common Wealth, both New York Times bestsellers.