What is nothing? Sounds like a simple question—nothing is simply the absence of something, of course—until you begin to think about it. The other night the American Museum of Natural History hosted its 14th annual Asimov Memorial Debate, which featured five leading thinkers opining (and sparring, sometimes testily, but more on that later) about the nature of nothing.
“Nothing is the most important part of the universe,” said Lawrence Krauss, a physicist at Arizona State University and author of the recent “A Universe from Nothing: Why There is Something Rather than Nothing.”
Read the rest at Physicists Debate the Many Varieties of Nothingness | Observations, Scientific American Blog Network