Funny you should post this, Carol Anne, as my son's doing a school project about it. It appears that plastics manufacturers are well aware of the problems caused by all these bags, and because it's big business, they're trying really hard to find a way of making them more eco-friendly. The advantages of these bags of course, is that they're roomy, quite strong, waterproof - and can be used to carry advertising slogans without the print coming off. Once they find a way of making them bio-degradable, I think they'll be here for good.