James TyrrellPhysarum polycephalum, also commonly known as slime mould. Solving the travelling salesman problemPhysarum polycephalum are capable of selecting the optimal (or at least close to optimal) path in linear time, although only slime mould is able to achieve the feat at such an incredibly low price point. Adamatsky and his team have shown how slime mould can be integrated with electrodes to produce wires that have self-healing properties