A space elevator would lift people and objects from earth to space via an orbiting counterweight. It's not technically feasible yet, but sounds like a better idea than strapping ourselves to 10-ton explosives like we've been doing. With a number of tech entrepreneurs like Elon Musk and Richard Branson fighting to bring regular people into space, a space elevator is just the kind of technology that would take us into the next century.
#1. Space Elevator
As Seen In: Star Trek: Voyager (1997)