The primary ethical concern with nuclear energy is the potential for catastrophic accidents, such as the Chernobyl and Fukushima disasters, and the long-term management and disposal of radioactive waste.

Nuclear medicine encompasses various applications, including MRI, radiation therapy, and PET, which utilize radioactive isotopes for diagnostic and therapeutic purposes.

The ethical concerns associated with nuclear weapons encompass the potential for widespread devastation, the risk of nuclear proliferation leading to increased global instability, and the long-term environmental consequences of nuclear explosions.

The NPT is a landmark international treaty that seeks to prevent the spread of nuclear weapons, promote nuclear disarmament, and facilitate cooperation in the peaceful uses of nuclear energy.

Nuclear winter refers to the potential long-term climatic and environmental consequences of a large-scale nuclear war, characterized by a dramatic decrease in global temperatures and widespread disruption of ecosystems.

The United States was the first country to successfully develop and detonate a nuclear weapon, conducting the Trinity test in New Mexico in July 1945.

Nuclear disarmament refers to the process of systematically reducing and eliminating nuclear weapons and their delivery systems, with the ultimate goal of achieving a nuclear-weapon-free world.

The IAEA is the global intergovernmental organization responsible for promoting the safe, secure, and peaceful use of nuclear technology, including nuclear energy, nuclear safety, and nuclear security.

Nuclear enrichment is the process of increasing the concentration of fissile isotopes, such as uranium-235, in a sample of nuclear material, typically for use in nuclear reactors or nuclear weapons.

Technetium-99m is a widely used radioactive isotope in nuclear medicine, primarily for diagnostic imaging procedures such as bone scans, heart stress tests, and thyroid scans.

Nuclear fusion is the process of combining lighter atomic nuclei into heavier ones, releasing a significant amount of energy. It is the process that powers the sun and other stars.

The CTBT is an international treaty that prohibits all nuclear weapon test explosions, in any environment, for any purpose. It has been signed by over 180 countries but has not yet entered into force.

Nuclear fission is the process of splitting a heavy atomic nucleus into two or more lighter nuclei, releasing a significant amount of energy. It is the process that powers nuclear reactors and nuclear weapons.

Cobalt-60 is a widely used radioactive isotope in radiation therapy, primarily for treating various types of cancer. It emits high-energy gamma rays that can target and destroy cancer cells.

Nuclear transmutation is the process of converting one element into another by changing the number of protons in its nucleus. This can be achieved through various nuclear reactions, such as nuclear fission, nuclear fusion, or particle bombardment.