Army Ants Obey Traffic Plan to Avoid Jams, Study Says

Just as a city relies on an efficient transportation network, research shows that vast army ant colonies also employ simple mechanisms to organize traffic flow and mimimize congestion.
According to a new study, some carnivorous ants use just a few simple rules of thumb to determine the direction taken by prey-seeking raiding parties and to organize potentially chaotic forest-floor freeways, packed with up to 200,000 fast-moving workers. More...

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