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PBS News Hour
Why planes can't fly when it's too hot
An extreme heat wave is baking the West and Southwest, with temperatures well above 100 degrees. More than 40 flights were cancelled or delayed because some planes can't safely lift off in that heat. Science correspondent Miles O’Brien joins Hari Sreenivasan to explain how high heat can ground air flight and the larger trend of our warming climate and how it affects us.
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