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California's Salton Sea: from environmental crisis to lithium goldmine?


Its shores were once crowded with Hollywood stars, for whom southern California's Salton Sea was an idyllic vacation hot spot. Today, the lake has deteriorated beyond recognition and poses a public health crisis. But some believe taking advantage of the vast reserve of lithium in its bowels could be key to reviving the region's fortunes — and help to build a carbon-free future while they're at it.