I’m not a big Walmart fan although I am a frequent customer.
But I’m really liking their Green campaign. If their 180 million customers each switched to greener products, it does make a huge difference.
Check out this fact sheet on compact flourescent bulbs.
I even heard a report on NPR that Walmart is committed to converting its truck fleet to biodiesel. When you operate the biggest fleet in the country (and world!), you have clout. This should spur lots of changes in that industry.