All you need is a 3D printer, some basic electronic skills and knowledge of Python. The components needed are a body, two wheels, motors to drive those wheels and some electronics. [Limenitis ...

In 1979, famed molecular biologist Francis Crick stated that it would be “impossible to create an exact wiring diagram for a cubic millimeter of brain tissue and the way all its neurons are firing,” ...

A dot and cross diagram for sodium chloride suggests that it is made up of pairs of sodium and chloride ions. It is not. A 3D construction model shows how the ions are arranged in a lattice structure.