SPACE - Are there any realistic scifi scenarios for space travel that could come to pass in the 21st century

Are there any realistic scifi scenarios for space travel that could come to pass in the 21st century? Futurist Peter Schwartz says there are — and over at Forbes, Elise Ackerman lays them out for us. Read more.. ...

http://io9.com/are-there-any-realistic-scifi-scenarios-for-space-trave