The film discusses the groundbreaking development of radioisotopes in medicine, beginning with the first sustained nuclear reaction in 1942. It details the production and application of isotopes, ...

Iodine has even been used to purify water, either in tablet or liquid form. Exposure to radioactive iodine isotopes can be extremely dangerous. After the catastrophic nuclear accident at Chernobyl ...

and purifying, which does all the above and also gets rid of viruses. UV lights do it all too, but they require a battery or solar charge. Finally, chemical treatments like iodine tablets are ...