"I screamed, but there was nothing to hear." NPR reports on the disturbing story of a man whom doctors thought was in a coma for 23 years. In reality, he was totally conscious, but couldn't communicate. Improved brain imaging technology--which made his real state apparent--was "like a second birth."
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.