"Jack circulated to another list an abstract of the paper he will be presenting at the 100 Year Starship convention in Orlando next month.  It's his superconductor/metamaterial scheme which has been placed in the "exotic propulsion" section.  The link to the agenda for that meeting is http://www.100yss.org/agenda.html .  An interesting collection of presentations.  And some lucky organization will get a half megabuck (and a kiss goodbye) from DARPA and NASA on 11/11/11 with the proviso that the organization commit to working on starships for 100 years." Jim Woodward