Desc: The Green Desert: Directed by Leo Zahn. With Patricia Mulroy. America's harshest climate is home to the nation's breadbasket. The desert valleys of Yuma, Imperial, and Coachella produce 90% of the winter vegetables consumed in the US. Agriculture in this region depends on Colorado River water delivered from the All-American Canal. Yet it's a system on the brink of catastrophe. The effects of climate change and a twenty-year drought have brought its reservoirs nearly to dead-pool. States battle for their fair share of precious river water amidst constant cries for cutbacks. In the face of unprecedented scarcity, these desert valleys are in a race to conserve and innovate. Can this agricultural linchpin find a way to survive? The food security of an entire country hangs in the balance.