California supplies 80% of the world’s almonds, now producing 2.1 billion pounds a year—three times more than it did just 14 years ago. But there’s a hidden cost. Each individual nut requires 1.1 gallons of water. New groves of almond trees are still being added—despite years of drought, which we all know is likely to continue. Tom Philpott is Food and Agriculture reporter for Mother Jones magazine.
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