Britain's equivalent of Super Wal-Mart will cross the Atlantic soon.

This may not be a terrible thing. Tesco has made some strides towards rectifying the negative impacts of big chain stores on neighborhoods and the environment.
The
largest solar roof in the world will sit atop Tesco's California distribution center.
In the UK, they offer a 10p shopping "Bag for Life," replaced for free if it wears out.
And! It is starting to label its produce with carbon footprint stickers.
How cool is that?
But, as Harry warns, Tesco and other UK big businesses might be
in it for the image, not the environment. "[Poll] respondents held BP, Tesco and British Airways most guilty of 'greenwash' aimed at creating an eco-friendly corporate image." I don't care why they do it as long as they're greening up, but this business of misleading greenwashing does concern me a bit.