With India's demand for electricity expected to more than double by the year 2015, the country is attempting to increase its reliance on nuclear energy. NewsHour special correspondent Simon Marks reports from India on the country's growing nuclear industry.

In an atomic bomb, the energy or force of the weapon is derived only from nuclear fission - the splitting of the nucleus of heavy elements such as plutonium or highly enriched uranium into lighter nuclei.

By PBS News Hour

North Korea said Thursday it had processed some 8,000 spent fuel rods that could be used to make atomic bombs, another in a series of moves in the ongoing nuclear standoff with Pyongyang.