File under postapocalyptic environmentalist porn: When Al Gore is vindicated and our planet is uninhabitable, our new digs might look something like the homes in The Universe: Living in Space. Tossing around concepts like "robonauts" and hollowed-out asteroids, the geeks charmingly explore how, in the distant future, we could be living in floating cities or in the deep void of space. Just ground your expectations: Like other initiatives, this might not happen until Obama's second term.
9 p.m. The History Channel
JEFF WILSER Photo: Corbis