Ray Suarez with author Denise Kiernan…
Meteor Explosion of Atomic Bomb Strength Injures 1,000 in Russia…
By Admin, PBS NewsHour
Iranian President Mahmoud Ahmadinejad announced Wednesday that the country's uranium enrichment program has reached a target of 3,000 working centrifuges.
By PBS NewsHour
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.
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