One big impact we have is at the grocery store, when we decide if we want plastic or paper. Or, better yet, utilize the reusable bags that many stores offer for a small fee. That is what I am going to start doing. But, from time to time, I do need plastic bags to clean up after my dog in the park or in the back yard, and we do use paper bags sometimes to collect our old newspapers for recycling. So, the best answer is neither (use reusable bags so you don't create any more waste), but below you will find some very interesting information about paper and plastic bags.