Considered perhaps the "greenest" mayor in the United States, Anderson gained international renown for his Salt Lake City Green Program – a comprehensive effort to improve sustainability and reduce the City's environmental footprint – which achieved a 31% reduction in greenhouse gas emissions from municipal operations in just 3 years. Elements of the program, which Anderson described as covering "everything from dog waste to nuclear waste", included initiatives to improve the efficiency of the City's fleet and use of electricity, measures to make Salt Lake City more bicycle-and pedestrian-friendly, and co-generation plants at the City's landfill and wastewater treatment facilities that recapture methane to generate electricity.