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  • Big Issues: What is Water Worth?

    Julie Zimmerman, a professor of green engineering at the Yale School of Forestry & Environmental Science, joined the Global Leadership: Big Issues class to explore some of the complex issues surrounding water scarcity and its connection to energy and climate.

    People from the Borana tribe by a reservoir in Yabelo, Ethiopia. Photo: Eric Lafforgue/Art In All Of Us/Corbis via Getty Images.