Tired of waiting for Lucius Malfoy's new alternate reality drama, Awake? Wait no more! The entire pilot has been released to the internet masses. Sit back and watch a very sad tale about a detective (Jason Isaacs) stuck between two crappy realities: one where his wife is alive and his son is dead, and another where…

In Matt Kindt's new graphic novel Revolver, the book's protagonist crosses over into an apocalyptic reality whenever he falls asleep in the "real" world. io9 talked to Kindt about job dissatisfaction and interdimensional angst.

At Sci-Fi Air Show, the spacecraft of yesteryear are refurbished and displayed for awed audiences. The catch? The site is from an alternate dimension in which these spaceships existed. In other words, Stanley Kubrick really filmed 2001 in deep space.

If I've learned anything from Alternate History fiction, it's that in 90% of all alternate universes are timelines where A.) Hitler won WWII; or B.) people fly zeppelins instead of planes. Today we'll explore the latter.

The Roman Empire has given speculative fiction authors plenty of fodder for alternate history tales. There are dozens of stories in which the fall of Rome is delayed or prevented, and technology advances at an alarming pace.

For example, there's Jacek Inglot's Quietus in which a Roman Empire that has rejected…

The Cold War, The Victorian Age, The Catholic Reformation... Is there anything Batman can't make better? This week we cover alternate histories of the DC and Marvel universes.

Great presidents are the bread and butter of American history. But for every Lincoln or Washington, there's a ton of poor saps who didn't even make the primaries. In this week's alt-fiction column, history's losers take over the White House.

It doesn't really matter to our dimension the British Empire never existed in another reality. At least it doesn't until somebody from one of those timelines comes to visit. This week we explore portals to other universes.

The Earth existed for four billion or so years before humans showed up and started recording history. Why limit ourselves to the what-ifs of the past few thousands years? In these alternate reality tales, continents and dinosaur empires rise and fall.

Alternate history occurs when somebody makes a slightly different decision or a key event just gets lost in the shuffle. But sometimes history changes when time-travelers drop by! Here's what AH literature teaches us to do (should we ever time-travel).