about natural radiation vs artificial huge differences exist

That is a basic introduction to nuclear physics. There are no fundamental physical differences between "natural" and "artificial" radiation. "Artificial" radionuclides are simply those isotopes that have very short half-lives such that they are only observed when humans make them in the laboratory (or reactor). But this distinction is not fundamental. "Natural" and "artificial" all exist on the chart of nuclides, which is the nuclear equivalent of the periodic table of the elements. That chapter points out that most fission products are unstable and undergo beta decay. That is well-known. They undergo beta decay exactly like some "natural" isotopes undergo beta decay, such as Potassium-40. Mark [BRAWM Team Member]