Plastic shopping bags

I thought this article was interesting.I think with global warming becoming such a concern more stores should start encouraging their customers to use cloth bags.We have been using cloth bags for years at our co-op grocery store and recently they have also been introduced at sobeys and I got one and see many other people using them as well.I imagine that plastic bags must take up alot of space at landfills and there is also the energy used to produce them.I would really encourage people to use the reuseable ones if they are able to..