A Map of the US...Made of Slime Mold
Road Trip The mold began in New York and grew across the country, seeking out oat-cluster "cities" and building its own highway system. Andy Adamatzky and Jeff JonesOne-celled organisms could make our road network more efficient The "roads" on this agar-gel map of the U.S. may not quite mirror reality, but they could help scientists build more-robust networks in the future. Physarum polycephalum, a type of slime mold, grows tendrils in search of food and withdraws extraneous arms to focus on the most efficient paths between sources. Although the American map is just an illustrative model made for Popular Science, researchers in the U.K. have used slime mold to create similar replicas of local roads and railways, backed up by computer models. Andy Adamatzky and Jeff Jones, specialists in unconventional computing at the University of the West of England in Bristol, found that, left to its own devices, the slime...