When taking a dog on a walk, pet owners are faced with an environmental conundrum: What do you do with your dog’s poo? Using a plastic bag and throwing it in the trash means covering an organic substance with inorganic material and sending it to the city dump. That seems unnecessarily environmentally destructive. So what to do? Utne Reader’s sister publication, Mother Earth News, has some tips on what to do with your pet’s dirty business. The article recommends burying the stuff at least 100 feet from any water sources. If that’s not possible, dog owners can also invest in some biodegradable doggy bags.