With concerns rising over Iran's reported 400 kilograms of uranium, experts analyze how much nuclear weapon-grade material ...

Chemists from The University of Manchester and The Australian National University (ANU) have engineered a new type of ...

The bomb dropped on Nagasaki was 20 kilotons. Today, that’s considered small. Such are the descriptive words of nuclear historian Alex Wellerstein, who created the generally cited NUKEMAP simulator.