The history-altering shenanigans from classic original series episode City on the Edge of Forever make for a surprisingly ...

Add Yahoo as a preferred source to see more of our stories on Google. Among the episodes of the original Star Trek, few have carried the weight—or the reputation—of "The City on the Edge of Forever." ...

Captain Kirk suffered a heartbreak so profound in Star Trek: The Original Series, that it remains the high water mark for the ...

There's an entire genre of films and television series built around the premise of the butterfly effect, where even the smallest alteration to the past alters the future. It could be in a positive way ...