California has been going through a catastrophic drought for three years now, which has cost the state’s economy at least $2.2 billion and left 500,000 acres of what was once rich, productive farmland fallow.

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Prof. Eilon Adar (r), director of the Negev’s Zuckerberg Institute for Water Research with colleagues at Ben-Gurion University. – Photo: Dani Machlis/BGU

So where did California turn to for help? Not the Obama White House, but to Israel, the world’s acknowledged expert on irrigation and water use.