From TEDxRainier: With streams and rivers drying up because of over-usage, Rob Harmon has implemented an ingenious market mechanism to bring back the water. Farmers and beer companies find their fates intertwined in the intriguing century-old tale of Prickly Pear Creek. (Recorded at TEDxRainier, November 2010, in Seattle, WA. Duration: 08:47)
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