Keeping warming to no more than 2 degrees Celsius will require reducing CO2 emissions practically to zero by late this century. And that will demand a wholesale, worldwide transformation to carbon-free energy. Sign up for our Clean Economy Weekly newsletter.
The European Union's biggest and most powerful industrial economy is making a clean break from coal, oil and nuclear energy. It is doing something most Americans would say is impossible, but already Germany is running on 25% clean energy and it is on track to reach 80 percent by 2050. Some experts say it could reach 100 percent by then.
But Germany's energiewende, or energy transformation, is really a very American story that revolves around self-reliant individuals in a responsive democracy forging a national can-do vision.