Robot swarms 'evolve' communication

Robots that artificially evolve ways to communicate with one another have been demonstrated by Swiss researchers. The "genomes" of the bots that found food and avoided poison most efficiently were recombined, mimicking biological natural selection. "We saw colonies that used their lights to signal when they found food and others that used signals to communicate they had found poison," said biologist Laurent Keller from the University of Lausanne.