The Millennial Trains project is making its third voyage, carrying innovative members of the generation on a rail tour across the U.S. The participants are young entrepreneurs who share their ideas on how to change the world along the ride, which includes meetups, interviews, and other experiences to help them develop their concepts. This group includes a doctoral student studying nutritional programs for obese children, and a postdoc working on a project to keep the elderly more safe. (Fast Company)