Almost ten years after the Fukushima nuclear disaster, researchers report that the particles from power plants contained plutonium.

Scientists used a measure of lingering radioactivity from nuclear explosions to estimate the age of whale sharks, an endangered species.

A new method for detecting forged paintings defeats a clever counterfeit strategy.

Physicists report the first direct observation of two-neutrino double electron capture for xenon 124, the process it uses to decay.