It has no brain. Yet the Physarum polycephalum, more commonly known as the slime mold or blob, is capable of solving complex problems, and transmitting knowledge to other organisms of its kind. Despite not having any legs, feet or wings, it can still move up to 1 cm/h by stretching out its membrane. This unicellular organism has another astonishing characteristic: it appears to be (almost) immortal. Unlike other animals, which undergo an aging process, the blob shows no signs of biological decline. The researchers observed that the blob can regenerate and divide indefinitely without showing any signs of cellular aging. Photo: Audrey DUSSUTOUR / CRCA / CNRS