It has been over one hundred years since the discovery of radioactivity. Today, you may hear a lot in the news about nuclear weapons and power plants. However, nuclear chemistry is also used to save peoples' lives through medical diagnoses and the treatment of diseases. As you learn more about nuclear chemistry, perhaps misunderstandings about it can be cleared up. Nuclear chemistry is a fascinating topic and you have only scratched the surface of what it is all about. Hopefully, this overview will encourage you to research more about topics revolving around nuclear chemistry, like radioactive dating, radiometric dating, medical tracers, isotopes in agriculture, nuclear medicine, radiation therapy, power for spacecraft, smoke detectors, and the synthesis of new elements.