'Crazy Ants' Spreading In The Southeastern US

In parts of the southeastern US, aggressive fire ants have been driven out by an even more recent arrival, the tawny crazy ant. Edward LeBrun, a researcher at the University of Texas at Austin, describes the newcomers and how one invasive species can out-invade another.

Source: http://www.npr.org/2013/05/24/186450907/crazy-ants-spreading-in-the-southeastern-us?ft=1&f=1007

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