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A French high-speed train (TGV) has smashed the world record for a train on conventional rails by a big margin, reaching 574.8km/h.


 travel France train TGV speed railway
Researchers in Japan have shown that a slime mold can design a network that is as efficient as one developed by humans over many years: the Tokyo rail system. Furthermore, the slime mold can build its network in a day. A slime mold is what scientists refer to as a single-celled amoeboid organism. When foraging for food, it spreads out as an amorphous mass and then builds tubular connections between the food sources.


 single-celled organism network simulation efficiency mathematics complexity railway
The way fungus-like slime moulds grow could help engineers design wireless communication networks. Scientists drew this conclusion after observing a slime mould as it grew into a network that was almost identical to the Tokyo rail system.


 railway efficiency slime intelligence network mathematics topology geometry