The Scientific Explanations Behind Near-Death Experiences

The light at the end of the tunnel. An out-of-body experience. Your life flashing before your eyes. According to Scientific American's Charles Q. Choi, 3% of Americans have had a near-death experience; now scientists are beginning to unravel the biological roots of these experiences. » 9/20/11 1:30pm 9/20/11 1:30pm