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Originally posted by Paladin327
yes, in nature Radioactive Isotopes decay naturally. The rate of decay. depends on the element. This decay is the elements "Half-Life" which by definition is the time it takes for half of the radioactive matter to decay. For Example, it takes Uranium 4 Billion years to decay into Lead.
Originally posted by watch_the_rocks
Does anyone know what percentage of mass/volume a nuke weapon has to lose before it is deemed out of date? I mean, 713 million years is a long time to lose only half.