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Recovery from the current large, rapid, human-induced perturbation, if left unchecked, will require thousands of years for the Earth system to reestablish even roughly similar ocean chemistry (Archer, 2005; Montenegro et al., 2007; Tyrrell et al.,
The UNECE Working Party on Pollution and Energy has approved a proposal to align the requirements on emissions from heavy-duty vehicle engines to the Euro VI legislation (EC Regulations 595/2009 and 582/2011), which enter into force in the European Union (EU) in January 2013. 29) in June 2012 for its final adoption. Source: UNECE.
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