Tabula Rasa Players Vote Led Zepplin, George Carter Greatest in their Fields

What are the milestones that signify humanity's most important achievements? From penicillin to George Carlin to The American Civil Rights Movement, users have weighed in on an online poll inspired by Tabula Rasa's Operation Immortality. The results of the polls are among the many digitized items stored on the "Immortality Drive" that will be taken to space by game designer Richard Garriott, who travels to the International Space Station (ISS) on Oct.12.