This article predates the current owners of Science Blog. It has not been reviewed under the current editorial process and is kept as part of the archive. Illustration of photon-photon scattering in a ...

A clever mathematical tool known as virtual particles unlocks the strange and mysterious inner workings of subatomic particles. What happens to these particles within atoms would stay unexplained ...

Physicists have long struggled to explain why the universe started with conditions suitable for life to evolve. Why do the physical laws and constants take the very specific values that allow stars, ...