Germany's government says it will shut down its nuclear power industry by 2022. It promises to reduce carbon emissions at the same time. To keep both promises through a combination of increased domestic output from renewable sources and lower demand for energy looks just about impossible. Most likely, Germany will have to import more energy--generated from nuclear and/or fossil-fuel sources. Quite what that achieves in terms of reducing the risk of nuclear accidents and diminishing global emissions of greenhouse gases would be hard to say.