In the Yard, Taking Care Of Business

摘要

The green economy is targeting a new color: brown. Each year the United States' 72 million dogs produce about 274 pounds of poo per pooch. Most of it ends up in landfills, where it oozes methane, a greenhouse gas. So eco-preneurs are offering biodegradable bags and compost services as well as new technologies that turn doggie dreck into energy.