Listen to computer scientists from around the world talk about how their projects are changing the way we communicate, learn, get around -- and live our lives.
Marc Smith, Microsoft Research, studies the sociology of the Internet:
"If you ever got a piece of chalk caught in your shoe and walked across the road -- there it was: The path you took behind you. Or steps in the sand that leave a footprint behind. Or footprints in the snow. I think that everything has become footprints in the snow. You can't touch anything without leaving a digital trace."
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Produced by Barbara Finkelstein: bfinkel@us.ibm.com
Last updated August 22, 2007