Narrator: At first glance, a fire ant hill — or mound, as it's properly called — looks impossibly small. And yet, a colony of up to 250,000 ants call it home. But here's the secret ...

Authorities have warned we could see 650,000 additional medical visits annually if the problem is not addressed.

fire ants are especially good at it because of their South American homeland. Mr Pianta said they've been found over there "forming massive, multi-colony-sized rafts", with the pests adapting to ...

Ant colonies are so tightly knit and efficient, they can pass useful knowledge between generations, which some experts believe constitutes a colony ... defenses. Fire ants bite and sting ...

Each Argentine ant colony has multiple queens, allowing the colony to expand rapidly both in population and territorial control. Today, native Californian ant species like harvester ants and ...

Hybrid fire ants, well established in East Tennessee and parts of Kentucky and North Carolina, are now infiltrating Southwest Virginia.

Japan has designated the Argentine ant and the venomous red imported fire ant, both native to South ... ants can inhabit a single nest, enabling a colony to grow at an explosive rate.