Should the human race use nuclear fusion as a power source? There are a lot of pros and cons to nuclear fusion. To me I believe that there is potential with nuclear fusion but I also think that there are many dangers if we as the human race get to confertible with using it but I do also think that way with wifi but that is for another time. To answer the question I believe that it is not the best thing for us to use as a power source. The meaning of nuclear fusion is when a nucleus gets evenly split into more nucleus. Then when it is getting split there are neutrons that will get formed in the product. By the end of this there are more nucleus and more neutrons. Then a chain reaction refers to when a nuclear fusion goes into a never ending