A local nonprofit focused on energy efficiency has released a comprehensive report calling for increased density in Boulder. Through exhaustive use of data, the 50-page “Growing Greener: The Environmental Benefits of a Compact and Connected Boulder” makes the case that the city cannot meet its climate goals without housing more people and lambasts the city’s anti-growth policies for exporting its environmental impacts into neighboring communities — despite Boulder’s reputation as a leader in sustainability. Even without more density, Boulder as it exists today is greener than its neighbors. In 2017, per capita emissions were 14 metric tons of CO2, compared to 17 for Colorado as a whole. According to Growing Greener, which used data from The Center for Neighborhood Technology,other cities and towns in Boulder County have 20% higher per capita emissions than Boulder based on vehicle use alone.