Nuclear power plants release no carbon dioxide at all — but there's the problem of what to do with the nuclear waste.

核电厂完全不释放二氧化碳，不过问题是怎样有效处理核废料。

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Some groups oppose nuclear power stations because they produce radioactive waste and could release radioactive material if there was an accident.

一些组织反对核电站，因为它们会产生放射性废料，而如果发生事故可能会释放出放射性物质。

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But nuclear power plants do not release greenhouse gases, which cause coal and gas-fired power plants to contribute to global warming.

但核电站并不会释放温室气体，而以煤炭和煤气为燃料的发电站会释放这种气体，造成全球变暖。

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"Release of nuclear posture review will set the stage, " said a U.S. official involved in proliferation issues.

WSJ: U.S. Keeps First-Strike Nuclear Strategy

The energy release from nuclear fission is roughly a million times greater per unit weight than fossil fuels, which is why nuclear fission is such a compelling long term energy source.

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The IAEA is scheduled to release a report on Iran's nuclear program next week and President Sarkozy and I agreed on the need to maintain the unprecedented international pressure on Iran to meet its obligations.

WHITEHOUSE: President Obama and President Sarkozy of France Speak on Bilateral Meeting | The White House