Germany is one of the eco-friendliest nations in the world, and Freiburg is often considered the greenest city in the country. It is a leader in the solar energy industry, often referred to as the Solar Capital, and has also created a sustainable model district.
Sustainable model districts are innovative car-free parts of town where houses have very low energy consumption. Another impressive part of the Freiburg model is it generates more energy than it consumes. If you are looking to live in a country that is on the eco-up and up go teach English abroad in Germany.