A number of things have been happening recently with the Tau Zero Foundation, but most of them have been behind the scenes. Marc Millis, founding architect of the TZF and former head of NASA’s Breakthrough Propulsion Physics project, now goes public with his thoughts on recent activities and where the Foundation is heading. To the fans and contributors of Tau Zero, thanks for your help and suggestions. It’s time to talk about recent progress and next-steps. One major news item is that I took an early retirement from NASA, in February 2010, so that I could devote more time to...