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Scientists warn of poisonous air if Utah's Great Salt Lake dries up

There's a potential climate catastrophe forming in Utah's Great Salt Lake. It has shrunk to a third of its original size, and scientists warn if it continues to dry up, it may expose heavy metals in the lakebed that could become airborne. CBS News correspondent Jamie Yuccas speaks with Westminster College biology professor Bonnie Baxter about what is causing the lake to shrink.
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