After years of confusion, a new study confirms the proton is tinier than once thought. That enables a test of the standard model of particle physics.

Being able to see inside an object is essential to understanding how it works. X-rays revolutionized medicine by giving doctors a noninvasive way to look beneath the skin — to spot broken bones, ...

The proton gradients that power respiration are as universal as the genetic code itself, giving an insight into the origin of life and the singular origin of complexity. Why do virtually all cells ...