Humans rescale their internal coordinate system according to the size of each new environment. This flexibility differs from rodents' rigid map that has a constant grid scale and empowers humans to navigate diverse places. When seeking navigational cues in any given location, humans automatically align their internal compass with the corners and shape of the space. In contrast, rodents do so relative to the walls of the environment through physical exploration. The nature of the coordinate system differs between humans and rodents -- Cartesian and hexagonal respectively. The findings illuminate the fabric of the human memory and spatial navigation, which are vulnerable to disease and deterioration. Deeper knowledge of these neuronal mechanisms can inform the development of techniques to prolong the health of this part of the brain and combat diseases such as Alzheimer's. - www.sciencedaily.com