Two of the United States' most important nuclear power plants - the San Onofre plant and the plant at Diablo Canyon - are both built in active earthquake zones.<br /><br />One sits along the coast, while the other is along a geological faultline.<br /><br />In the wake of Japan's earthquake and tsunami - and fears of a radioactive meltdown there - nuclear industry officials in the US have reassured the public that there is nothing to worry about on home soil.<br /><br />But environmental groups have restated that nuclear power comes at an often steep price.<br /><br />Al Jazeera's Rob Reynolds reports from Southern California.
