What do you believe is the single most important factor driving up the cost of living in Nigeria?

Imperial County consistently ranks among the most economically distressed places in California. The Salton Sea, the state's biggest and most toxic lake, is an environmental disaster. And the region's politics have been dominated by a conservative white elite, despite its supermajority Latino population.

The county also happens to be sitting on enough lithium to produce nearly 400 million batteries, sufficient to completely revamp the American auto fleet to electric propulsion. Even better, that lithium could be extracted in a way consistent with broader goals to reduce pollution.

The traditional ways to extract lithium involve either hard rock mining, which generates lots of waste, or large evaporation ponds, which waste a lot of water. In Imperial Valley, companies are pioneering a third method. They are extracting the mineral from the underground briny water brought up during geothermal energy production and then injecting that briny water back into the ground in a closed loop. It promises to yield the cleanest, greenest lithium on the planet.

The hope of a clean energy future has excited investors and public officials so much that the area is being rechristened as "Lithium Valley."

In a region desperate for jobs and income, the prospect of a "white gold rush" is appealing. Public officials have been working to roll out the red carpet for big investors, including trying to create a clear plan for infrastructure and a quicker permitting process. To get community groups' support, they are playing up the potential for jobs, including company commitments to hire local workers.

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