Space-based nuclear weapons are a serious matter, and one that deserves the very highest level of national attention.

The Moon has inspired myths, guided sailors, and lit up our nights for thousands of years. But during one of the most intense ...

When a nuclear accident happens, it’s vital that scientists have accurate fallout models.

Imagine a 150-kiloton nuclear bomb exploded in the city closest to you. Do you know how the city, its surrounding region, and its inhabitants would be affected? If you can't think of much more than "a ...

When Iran’s covert nuclear program came to international attention over two decades ago, Tehran insisted that its intentions were peaceful and that it had no plans to develop weapons. The country’s ...