Invasive 'crazy ants' are nastier and far tougher than we imagined

There's an arms race going on right now between two species of invading ants, the tawny crazy ant and the fire ant. These arch-rivals are currently warring for dominance in the southern U.S., but it now appears the crazies are going to win — the result of a remarkable chemical defensive measure. » 2/13/14 11:20am 2/13/14 11:20am