Larry Engel, Director and Director of Photography for "The Human Spark," shares his initial thoughts on his task of filming Alan Alda.
Graham Chedd tells the story of what happened at the European Synchrotron Radiation Facility, where researchers were examining Neanderthal teeth with a high-power x-ray.
How long did it take Neanderthals to grow up? Graham Chedd meets with researchers who are using a giant particle accelerator to find an answer to this question.
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