“Breathes there a man with soul so dead, that never to himself hath said, “this is my own, my native land…?”—Sir Walter Scott. High on the side of the Hilton Hotel is a glass-walled bridge connecting to the Baltimore Convention Center: crossing it was like walking on plush carpets through the sky. The 2009 World Stem Cell Summit was housed in three ballrooms, each big enough to host its own convention. High ceilings? You could buzz a plane around in there! Surrounding the ballrooms was a collection of stem cell displays: biomed companies, exhibits from colleges, states, nations—and a changing set of science posters, each one deserving of a conversation with the scientist standing beside it. (Read on …)