This weekend, we celebrate the awesome majesty of superpowered suits of armor, with Iron Man 3. But the "power armor" genre has a long and kick-ass history, spanning decades of battles and adventures. Here are the 10 most essential power-armor stories of all time!

So much of science fiction's core topics intersect with war, one way or the other. Rapid social change and technological innovation both get supercharged during wartime, and some of our greatest explorers are also warriors. So it's not surprising that many of science fiction's most well-known authors served in the…

Over at the Atlantic, Ta-Nehisi Coates writes about having just read Joe Haldeman's The Forever War, which he now considers one of his top ten novels of all time. In singing the praises of Haldeman's classic war novel, Coates also advances an idea that the best works in any genre are ones that transcend that genre, or…

War changes everything. War is an apocalypse and a technological revolution and a life-changing adventure, all rolled into one. So it's not surprising that many of science fiction's most indelible stories are about warfare.

Communication with aliens is going to be a tricky business — and it could easily turn violent. When we meet extraterrestrial intelligences, we'll have to be careful not to jump to conclusions. Luckily, science fiction is full of examples of miscommunication between humans and aliens, which we can learn from.

For every movie that makes it to your local cineplex, there are dozens that never come into existence. In another universe, Mel Gibson directed Fahrenheit 451, Terry Gilliam directed Watchmen, and Batman fought Godzilla. The history of movies is crammed full of weird almost-weres and could-have-beens. A lot of people…

War is hell. But an ultimate weapon is hella cool.

Over at Shelfari, they're discussing "the worst books of the good authors" in science fiction. Including lone clunkers by Asimov, Heinlein and Niven. What are your least favorite books by your favorite authors? [Shelfari]

Science fiction's greatest authors have brilliant ideas, storytelling mojo... and plenty of stubbornness. Many of the field's greatest writers were buried in rejection slips, before they finally broke in. Here are 15 classic novels that publishers didn't want to touch.

William Gibson shares his dearest science fiction novels with New York Magazine. The best is his blurb for Samuel R. Delany's Dhalgren. "It won't work unless you can allow it to become your head for a few weeks." [via DisInfo]