Given how little we understand about the roots of consciousness, it simply doesn't make a whole lot of sense to make commitments one way or the other when it comes to questions of what exactly dies and how. Duncan P. Walker/iStockphoto hide caption

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Duncan P. Walker/iStockphoto

To children the world is a vast experiment, a laboratory of how things interact with one another. hide caption

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Dr. Jim Olson meets with Carver Faull at Seattle Children's Hospital in August. Carver, now 12, had surgery to remove a brain tumor in 2012. Matthew Ryan Williams for NPR hide caption

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Matthew Ryan Williams for NPR

Treating Kids' Cancer With Science And A Pocket Full Of Hope

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