by Teresa Herrmann -
May 11th, 2008 
Last month, retail giant Tesco became the world’s first supermarket to stick carbon impact labels on its own-brand products.
Who's behind it all?
The UK's Carbon Trust, with its proprietary carbon-labeling scheme that it brought to market in 2007.
The ubiquitous "Carbon Trust" name has been bouncing around the Web for ages.
So who are they exactly -- and what else are they doing?
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