10 Superheroes Who Can Never Have Sex

It's tough to be a superhero. Not only do you have to drop everything and get into a brawl at a second's notice, but you're frequently misunderstood. Superheroes' personal lives are a mess — especially their sex lives. But it gets worse. Here are 10 superheroes who are physically unable to have sex. Ever. » 2/13/15 1:43pm 2/13/15 1:43pm

This Huge Engineering Project May Be Our Best Chance At Colonizing Space

Space colonization has reached an impasse, for reasons far more fundamental than a lack of money for the Space Shuttle program. There is simply no way humans can travel easily offworld without using massive amounts of rocket fuel to escape the gravity well — and that's both expensive and environmentally… » 2/04/15 2:32pm 2/04/15 2:32pm