How to Colonize the Stars: The Challenge of Interstellar Flight

The story

Leading physicists and engineers in the field of interstellar travel discuss some of the deep issues we face when considering the problem of sending spacecraft to other stars. Will mankind ever truly become a space fairing civilization? Space colonization is no longer the fodder of science fiction, it is becoming a reality. We'll need to learn how to grow food, manufacture and live off our planet.