yeah, these things are freaky.

my grade 5/6 teacher (i went to a very small elementary school that had one split 5/6 class with the same teacher both years) had a thing for playing old time radio. we got to listen to the original war of the worlds and a bunch of other things. one of them was a story of fire ants advancing on a village in south america from a first person perspective, and the carnage that ensued when they ravaged it. that's something i won't forget....it was both educational and scary as fuck....

http://www.scientificamerican.com/article.cfm?id=bizarre-fire-ants-create-rafts-survive