US senators introduce bipartisan bill to tackle climate change

Two US senators have introduced a bipartisan bill to reduce the short-lived but powerful greenhouse gases responsible for around 40% of global warming. - See more at: http://www.rtcc.org/2014/06/27/us-senators-introduce-bipartisan-bill-to-tackle-climate-change/#sthash.jUQcFXaU.dpuf

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