Concerning Chernobyl, maybe humans societies adopt a new threshold against thyroid type cancers, but it's still not considered safe for humans. Hiroshima is no

Concerning Chernobyl, maybe humans societies adopt a new threshold against thyroid type cancers, but it's still not considered safe for humans. Hiroshima is not the reference for later generation nuclear bombs, which were magnitudes above them by payload and blast energy and different in isotopes emissioned. Bikini Atoll is still uninhabited as it deemed unsafe even though the population was originally re-relocated. Problems might also arise from incomplete reactions which might happen with cheaper, less sophisticated bombs or intentionally with dirty bomb types meant for scorched earth tactics or to maximize economic impact due to radiation related sicknesses. https://en.wikipedia.org/wiki/Bikini_Atoll#Return_to_Bikini_Island https://en.wikipedia.org/wiki/Bikini_Atoll#Return_to_Bikini_...