Original sentence: Its use in human society is controversial.Opponents argue against it due to various risks and that there are better alternatives.Proponents argue that these risks are small and that for various reasons nuclear power is a better or more realistic energy source than alternatives
Edited sentence: It is disputed whether the risks of nuclear power can be mitigated through new technology.Its use is controversial due to the long term problem of storing radioactive waste, the potential for severe radioactive contamination by an accident, and the possibility that its use will lead to the proliferation of nuclear weapons