A road sign on Hamburg's Max-Brauer-Allee warns motorists that older diesel vehicles are banned from using this stretch of road. Hamburg is the first German city to ban older diesel vehicles.
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U.S. Ambassador to Germany Richard Grenell (left) and German President Frank-Walter Steinmeier greet the media during Grenell's accreditation process at the Bellevue Palace in Berlin on Tuesday.
A Jewish man wears a yarmulke, also called a kippa, during a meeting on "the German and French perspectives on immigration, integration and identity" organized by the American Jewish Committee this week in Berlin.
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Cars drive along Mittlerer Ring in Munich. Germany's highest court has ruled that cities may impose bans or partial bans on diesel cars in order to bring down emissions levels.
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