If radioactive elements decay over time, and after turning into other radioactive elements one day turn into a stable element (e.g. Uranium -> Radium -> Radon -> Polonium -> Lead): Does this mean one day there will be no radioactive elements left on earth?
In: 3914
Perhaps we could run out of uranium one day, but some radioactive elements like carbon-14 are constantly replenished by cosmic rays, and others like bismuth-209 have long enough half-lives to outlast the Earth by a wide margin.
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