Breeder reactors can solve the fuel problem, but because of worries that such reactors may be used in the production of nuclear bombs, the international community will not deregulate their use.

• 更严重的是铀矿蕴藏量有限，只要全世界大量使用核能，铀矿很快会用竭，从低浓度铀矿粹取所耗能量太大得不偿失。