A Spark of Inspiration

Any parent can remember the moment when their child asks one of those seemingly simple, yet devilishly hard questions: “why is the sky blue?”… “why are plants green?”…and “where do babies come from?” One of the toughest in this category is “what is a flame?” Miles O’Brien report on Alan Alda’s Flame Challenge, which challenges scientists to answer that question: with 6,000 11-year-olds as judge.