German Environment Minister Hendricks On Summer Tour [Getty Images]

DUISBURG, GERMANY - AUGUST 21: German Environment Minister Hendricks on summer tour on August 21, 2014 in Duisburg, Germany. Riding a bicycle in the Landschaftspark Duisburg-Nord, a park project in former industrial area which is a public park now. (Photo by Ute Grabowsky/Photothek via Getty Images)

Photothek Ute Grabowsky