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Gray Matter Gabfest, Our Pulsating Earth, Smarty Cats

Curiosity Weekly

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How Long Does It Take?

CNN's John Sutter talks with a man who has been unable to move his eyes for years. He is now able to communicate using electrodes implanted in his brain. But the electrodes are nearing the end of their life span, so they might need to find another clever way to get into his brain.

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