Clouds of atoms can be cooled to a tiny fraction of a degree above absolute zero – using lasers! Come see a demonstration of how it is done by Pennsylvania native Dr. William Phillips, who won the 1997 Nobel Prize in Physics for trapping and laser-cooling atoms. Supercooled atoms form the basis for the most accurate atomic clocks, which are the heart of the GPS system that may help you navigate to this presentation! For more information contact Michele Slogan (slogan@pitt.edu).