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Ethnobotanist Mark Plotkin describes what the people of the Amazon know that you don't. Ecologist Jon Foley reveals the other inconvenient truth, that we have to rethink how we farm. Discussing the coming crisis in anti-biotics, economist Ramanan Laxminarayan and asks us to think twice before reaching for this double-edged resource. Community organizer Rob Hopkins argues that individuals, towns and communities have a large role to play in lowering our dependence on fossil fuels. Navi Radjou, a champion of frugal innovation, or "jugaad" — a Hindi term meaning a cleverly improvised solution to a problem -- considers creative problem solving in the face of extreme limits.

Learn more or listen again to this week's show.

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Guy Raz