RT @niklas_gohl: Does the 9-Euro-Ticket reduce air pollution? In our new working paper Philipp Schrauth and I show that the ticket causally reduced a benchmark air pollution index by aprroximately six percent.

https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/deliver/index/docId/55846/file/cepa50.pdf

🐦🔗: https://nitter.eu/catherinerowett/status/1559165467448774656