Rudy Rucker, Computer Scientist, CA Merritt Ruhlen, Linguist, Stanford Douglas Rushkoff, Media Analyst, New York Scott Sampson, Paleontologist, Utah Museum of Natural History Larry Sanger, Philosopher, Cofounder, Wilipedia Robert Sapolsky, Biologist, Stanford Dimitar Sasselov, Physicist, Harvard Zalman Schachter Shalom