After Christmas dinner in 2021, our family was glued to the television, watching the nail-biting launch of NASA's US$10 ...

Materials scientists can learn a lot about a sample material by shooting lasers at it. With nonlinear optical microscopy—a ...

Normal cellular processes in living things — from germinating plants to our own cells — create biophotons, though escaping light isn’t visible to us.

Physicists in Toronto observe quantum “negative time”: a pulse of light appears to leave before entering atoms.