Last year, Facebook, came under pressure in relation to energy use following its decision to site its new data centre in Oregon and to power it with electricity largely generated from coal.

去年，脸谱网迫于能耗问题不得不作出将数据中心转移到俄勒冈州，使用燃煤发电来供应机器运转。

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Between 2008 and 2009, emissions from electricity generation fell by 13% as a result of lower use of coal-fired generation but more use of nuclear.

从2008年到2009年，因为将少使用火力发电而改用核能，发电厂的排放量下降了13%。

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People use coal to heat the house and generate electricity.

人们使用煤炭来给房子取暧和发电。

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That's because they use less electricity and coal-fired power plants are the biggest source of mercury emissions in the air.

NPR: CFL Bulbs Have One Hitch: Toxic Mercury

Wind farms are being planned as part of the UK and Welsh governments' push to produce more electricity from less polluting sources, and reduce the use of coal, oil and gas.

BBC: Mid Wales

Cancelling such extensions will thus both push up electricity prices and, as coal, gas and oil use increases, result in an overall rise in CO2 emissions - at least in the short-run.

BBC: Will Japanese crisis curb the rise of nuclear power?