Amanpour: Michael Mann, Maleeha Lodhi, Geena Davis and Tom Donahue

Michael Mann, professor of atmospheric science at Penn State University, explains how and why our dietary and agricultural practices need to be seriously reformed if we are to end the current climate crisis. Maleeha Lodhi, Pakistani ambassador to the United Nations, talks about the escalating crisis between Pakistan and India. Our Hari Sreenivasan sits down with Geena Davis, Oscar-winning actress and executive producer of "This Changes Everything", and Tom Donahue, director of "This Changes Everything. They discuss how we need more women on screen.

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