The Fall of the Iron Curtain announced itself in environmental terms as well. But before that: How did environmental protection rank within the two states in divided Germany? Was it given any priority? The principle of sustainability serves the well-being of all people, but is often only implemented on a voluntary and individual basis. Should states regulate the path to sustainable living or should everyone decide for themselves? How does contemporary Germany rank in terms of renewable energies? How environmentally conscious are young Germans and how do they compare to their American peers? Who is responsible for ensuring that future generations can still live on this world?