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Why is Fluoride in our Water?

Today on CNN 10, we find out what's fueling a debate over the decades-long practice of adding the mineral fluoride to drinking water in the US. Then, we'll take in the glamorous looks interpreting this year's MET Gala historic theme. And we'll check out new technology that allows a plane to land itself, before seeing which two world record holders got together for a play date. All this and more on today's CNN 10!

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The skinny

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