Researchers find that a photon can spend a negative amount of time in an excited atomic state while passing through a cloud ...

Researchers with the Department of Energy's Oak Ridge National Laboratory and the University of Tennessee, Knoxville, have ...

Plutonium has captured the attention of scientists since its discovery in the early 1940s. This enigmatic element has an ...

A micrograph showing the operation of a ‘conveyor belt’ of atom arrays. At each step, a fresh array is created at the bottom, ...

Why do some elements decay in minutes, while others last billions of years? Certain "magic numbers" of nuclear particles may ...