Madison’s sister city is a leader in sustainability
Currently 40 percent carbon neutral, Madison’s sister city, Freiburg, Germany, is a world leader in sustainable development, according to GreenSummer Freiburg program representative Beth Tryon. Currently 40 percent carbon neutral, Madison’s sister city, Freiburg, Germany, is a world leader in sustainable development, according to GreenSummer Freiburg program representative Beth Tryon.