Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

For the first time, researchers have found one of the most important molecular machines in our cells uses a ‘twisting elevator’ mechanism, solving a mystery of how it transports crucial chemical ...

Consisting of a two-dimensional (2D) array of rings and pillars, the structure can improve the short-circuit current of a thin-film crystalline solar cell by over 50%, its creators say. The ...