Original sentence: Nuclear power's use is controversial.Opponents argue against its use because of 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.Proponents argue that these risks are small.They argue that nuclear power may currently be the only energy source that realistically can be built out if fossil fuels begin peak oil depletion or become discouraged because of environmental problems such as global warming
Edited sentence: It is disputed whether the risks can be reduced through new technology.Nuclear power and some types of renewable energy may be the only energy sources that realistically can be built out rapidly if fossil fuels begin peak oil depletion or become discouraged because of environmental problems such as global warming since they both generate relatively little greenhouse gases.Nuclear power's use is controversial because of 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.The nuclear industry and proponents argue that these risks are small