economics of drought

These little pistachios are very thirsty. It takes almost a gallon of water to grow one pistachio and a gallon of water to grow an almond. Nut trees are some of the thirstiest crops around. And yet, here we are in the middle of a drought and Mark is planting pistachio trees as fast as he can. - The screwed-up economics of drought, and why the rational thing to do in California right now is use more water.