To children the world is a vast experiment, a laboratory of how things interact with one another. iStockphoto.com 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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Shots - Health News

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

Lessons in optimism from very ill children inspire pediatric oncologist Jim Olson in his hunt for better treatments for brain tumors.

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