Researchers Build Logic Gates from Bacteria

I first saw a demo of this back in 2002 or 2003 by Ron Weiss [1]. He had made not just logic gates, but also oscillators. The best one was Conway's game of life done with living bacteria [2]!

[1] http://www.princeton.edu/pr/pwb/02/1007/6a.shtml [2] http://people.csail.mit.edu/rweiss/