Nuclear events refer to incidents involving the release of nuclear energy, which can occur during the operation of nuclear power plants or as a result of nuclear weapons. These events can range from routine operations to accidents, such as the Chernobyl disaster in 1986, where a reactor explosion released large amounts of radioactive material into the environment. In addition to accidents, nuclear events can also include tests of nuclear weapons, which have been conducted by various countries throughout history. The effects of these events can be devastating, leading to long-term health issues and environmental damage, as seen in the aftermath of the Hiroshima and Nagasaki bombings.