Penn in Berlin & Rotterdam is an intensive summer abroad program, directed by Professor Simon Richter, that focuses on the culture of sustainability. This year, the students of Penn in Berlin & Rotterdam wrote a blog on their experiences. If you want to get a lively, inside look at the current state of sustainability and efforts to fight climate change in the Netherlands and Germany, check it out. It was an amazing journey. 

http://web.sas.upenn.edu/penninberlin-rotterdam/