Tucked into the Alberta neighborhood in North Portland, Parallel Worlds Bookshop is a haven for readers who love everything from "romantasy" to robots.

For decades, scientists, philosophers and science fiction writers have been fascinated by the idea of parallel universes — realms that may exist beyond our own, each potentially with its own version ...

Peacemaker is torn between a world where a livid Rick Flag Sr. wants vengeance, and a parallel world where the grass looks awfully greener, in a new Season 2 trailer unveiled Saturday at San Diego ...