
Dec. 14, 2012
Alan Alda’s Challenge to Scientists: What Is Time?
Calling all scientists! How do you explain the concept of time to an 11-year-old?

Jun. 08, 2012
The Winning Answer to a Burning Question
The winner of Alan Alda’s ‘Flame Challenge’ draws on animation, song and a physics background.

Mar. 23, 2012
Alan Alda Asks Scientists 'What Is A Flame?'
Eleven-year-olds from around the world will judge entries to Alda's "Flame Challenge."
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