BERLIN — After our federal election Sunday, I looked at a map of Germany, its tree-shaped silhouette colored according to the winners of each constituency, and I worried about our future.

Maps show how every district in Germany voted. The conservative Christian Democrats have won the most seats while the far-right AfD placed second.

An old, misleading map has resurfaced online, showing Germany’s borders lined with 30 nuclear power plants. The plants are spread across Germany's neighbours: the Netherlands, ...