Almost all American nuclear power plants have backup batteries that would last only half as long as those at Japan's troubled Fukushima Daiichi plant did after a tsunami knocked out power there, an expert testified at a Senate committee briefing on nuclear safety.

Almost all American nuclear power plants have backup batteries that would last only half as long as those at Japan’s troubled Fukushima Daiichi plant did after a tsunami knocked out power there, an expert testified at a Senate committee briefing on nuclear safety.
Read more here.