How fire ants invaded North America, then the world, in just a few decades

The insect known as S. invicta, or the fire ant, will bite the crap out of you, join up with its buddies to swarm everywhere, and ruin everything in its path. And they're everywhere! The truly scary part is that they didn't used to be so ubiquitous - in fact, fire ants used to live in a relatively small area in… »2/24/11 3:23pm2/24/11 3:23pm