She concluded that cities are falling short in two areas: preparing for the likely impacts of climate change and cutting their own greenhouse gas emissions by reducing fossil fuel use.

她总结说城市在以下两个方面做得不够：为气候变化的可能影响做的准备不够以及通过减少矿物燃料的使用来减少它们自身温室气体的排放做得不够。

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Of the 30 countries already with nuclear power, only 14 enrich their own fuel - the rest buy it in.

在已经拥有核电的30个国家中，只有14个在自己浓缩燃料，其它国家则是购进。

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Newcomers to nuclear power could be reluctant to put their fuel cycles in international hands if existing nuclear powers, such as the us, Russia and the UK, continue to control their own.

如果现有的核大国如美国、俄国和英国继续控制自己的燃料回收，新生的核能国家就可能不愿意将燃料回收置于国际掌控之下。

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And we may have worried that getting them their their own phones in middle school might divert them a bit from their homework or fuel their addiction to screens.

FORBES: Parents, Beware: Big Commerce is Watching Your Kids, Courtesy of Their Phone Apps

Most of the states that have adopted their own renewable fuel standards are in the Southwest and Pacific Northwest--where there seems to be a great potential for renewables--or in the heavily populated Northeast.

FORBES: Magazine Article

Although this is impressive, America's Department of Energy has calculated that carbon materials will need to be able to store 6.5% of their own weight of hydrogen in order to make fuel-cell cars practical (defined as having a range of 500km, or 310 miles, between refuelling stops).

ECONOMIST: Space-age soot