There have been several nuclear accidents in the last 100 years. We're looking at trillions and trillions of dollars here. We still have not found a safe and affordable way to process and store nuclear waste. The processing plants catch on fire during the last stages. Every attempt to close the loop has failed. it would be easier to invent a time machine than solving this problem. At least with a time machine you could go into the future and personally hurt them. On second thought, we should find a way for humans to pump up they're fake egos that doesn't involve destroying the future generations chances for survival.