Original sentence: The use of nuclear power is controversial because of the problem of storing radioactive waste for indefinite periods, the potential for possibly severe radioactive contamination by accident or sabotage, and the possibility that its use could in some countries lead to the proliferation of nuclear weapons
Edited sentence: Because free investors would not choose nuclear energy over safe, clean alternatives, many governments take money from their citizens and give it to the nuclear industry by compelling citizens to pay for nuclear energy and its risks by force, which substantially reduces the money available worldwide for investment in safe, clean energy.In addition, the  problem of storing radioactive waste for indefinite periods, the potential for possibly severe radioactive contamination by accident or sabotage, and the possibility that its use could in some countries lead to the proliferation of nuclear weapons.The cost of just a single accident at the Chernobyl electric station in Ukraine has cost three times as much as all the economic benefit derived from the soviet nuclear energy program.The use of nuclear power is controversial because the costs of an accident is greater than all the insurance companies in the world could insure, and because a single accident could dwarf the economic benefits as indeed has already occurred in the former soviet union