Alan Alda's Challenge to Scientists: What is Time? | WAMU 88.5 - American University Radio
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Alan Alda's Challenge to Scientists: What is Time?

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Alan Alda founded The Flame Challenge last year to promote better science communication, and he started by asking scientists to come up with a kid-friendly explanation for a flame. Now, Alda is back with round two of the popular contest, and kids want to know: What is time?
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