Nuclear energy remains an attractive potential means of propulsion for future spacecraft. When compared with conventional rocket engines, a nuclear propulsion system would in theory be less massive, and could provide sustained thrust with greater...

Nuclear propulsion includes a wide variety of propulsion methods that use some form of nuclear reaction as their primary power source. Many military submarines and a growing figure - with crude prices and emission in mind - of large surface ships,...

Independent arms control experts from 15 countries are drafting a treaty to ban production of uranium and plutonium for nuclear weapons that could rival a U.S. text under consideration by the U.N.'s top disarmament body.Frank von Hippel, a professor of public and international affairs at...