Nuclear energy is an energy stemming from an atomic core made up of protons and neutrons. There are two ways to produce nuclear energy: nuclear fission and nuclear fusion. Nuclear fission is when the nucleus of an atom splits into several parts whereas nuclear fusion is when the nuclei fuse together. These processes generate heat to produce steam which can be converted into electricity. Up until now, all nuclear energy we use in our world today is produced through nuclear fission as nuclear fusion is still in the research and development stage. While burning fossil fuels releases greenhouse gases, electricity generation by nuclear fission does not directly produce carbon dioxide. In fact, energy generation by nuclear fission is almost 8,000 times more efficient than that by fossil fuels. Unlike solar and wind which generate energy inconsistently depending on weather conditions, nuclear power can reliably provide a high baseload of constant energy to the grid. Discussing the pros and cons of nuclear energy in this episode are Assoc. Prof. Dr. Sunchai Nilsuwankosit, a nuclear engineer at Faculty of Engineering, Chulalongkorn University and Prof. Kate Brown, a science historian at Massachusetts Institute of Technology, or MIT, in the United States.