Meet the worst ants in the world
Why it’s so hard to get rid of Argentine ants. Also some interesting insights on how founder-effect genetic bottlenecks can change the behavior of species as they move into new ecosystems. In their original habitat, each colony fights each other ruthlessly. But when a colony hitches a ride on a ship or train and expands in a new region, all that region’s ants descend from the same colony and read each other as friends, not foes.