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East of Los Angeles, there's a landlocked, salty lake called the Salton Sea.

Once advertised as a swanky tourist destination in the 1950s and 60s, it's now drying up.

Toxic dust from the exposed lakebed is severely impacting the health of local residents.

This is Scientific Americans Science Quickly. I'm Kate Furby.

I've been there when there's been dust storms where it's been very difficult to actually

drive or see because of the impaired visibility. There's just this very rotten egg smell

in the summertime and it's not a really great place to be.

That's Anne Cheney, an associate professor at the University of California, Riverside, who studies public health and health services at the Salton Sea.

At one level, you look, and you can see the sea, and it's beautiful. You can see the palm trees.

So you're embedded between these two mountain chains. But then you breathe. And then you remember

that you're in an environment where at any moment the wind could pick up and bring the toxicity from the

playa of the drying sea into your body. The Salton Sea is the largest lake in California,

but it actually started out as an accident. 150 years ago, it didn't even exist. It was basically

just a dry valley. Then in 1905, a canal

breached and flooded the ancient lake bed with water from the Colorado River, which created an

oasis. A sea in the desert with its wide sandy beaches, no tides or dangerous undercurrents,

and with literally millions of fish ready for the

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