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Heat Waves Are Bad For (Even The Healthiest) Lungs

03:57
Heat can create haze over big cities like New York City. When ozone is exposed to heat and sunlight, bad chemicals are released that can irritate people's lungs. (Getty Images)
Heat can create haze over big cities like New York City. When ozone is exposed to heat and sunlight, bad chemicals are released that can irritate people's lungs. (Getty Images)

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