When our planet and the incoming sunlight align just right, stunning phenomena such as rainbows and halos can occur. More often, sunlight—or shortwave radiation—interacts with the Earth in subtle but ...

An IAEA research project involving 27 countries has strengthened global understanding of how exposure to ionizing radiation affects human health. The project focused on the clinical applications of ...

For nearly four decades, the stray dogs of Chernobyl have lived and bred in one of the most contaminated landscapes on Earth, absorbing low doses of radiation that would keep most people far away.