By Will Dunham WASHINGTON, April 3 (Reuters) - A supernova - the explosive death of a star - is always violent, blasting ...
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A look at the largest nuclear explosions in history
There has not been a major (or minor) nuclear explosion since the 1960s. This is almost entirely because the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) was opened for signature on July 1 ...
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