It can be used in medicine, they use a radioactive isotope of a very short half life to help diagnose medical conditions. Carbon 14 can also be used to date organic material and is determined by the...
Presumably you mean radio-isotopes? These are produced usually in small reactors built for the purpose and possibly for other experimental purposes. Short lived isotopes are the most useful for...
radioactive isotopes can be used to determine the ages of rocks and fossils to treat cancer and kill bacteria that causes food to spoil as "tracers" to follow the movements of substances within...