Add Yahoo as a preferred source to see more of our stories on Google. Atomic bombs work via a process called nuclear fission that involves atom splitting. Shortly after scientists discovered nuclear ...

TEHRAN (Reuters) - President Mahmoud Ahmadinejad on Tuesday denied reports that Iran had slowed down its atomic work, which the West fears is aimed at making nuclear bombs. "These (reports) are not ...

A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually beat the accuracy of today’s best atomic clocks ...

TEHRAN (Reuters) - Iran will not be pushed by sanctions to suspend work on its disputed nuclear program, President Mahmoud Ahmadinejad said on Saturday, two days after six world powers met to discuss ...

Iran’s ban on international nuclear inspections has led to a critical loss of knowledge about the country’s atomic work, United Nations monitors wrote in two restricted reports, their first since the ...