![wethemillions on Twitter: "Rick van der Ploeg en Marleen Janssen Groesbeek speciale gasten #wethemillions @DuizelinhetPark check https://t.co/JNEjuMRqJu en zeg YES! https://t.co/0cja6YIVlJ" / Twitter wethemillions on Twitter: "Rick van der Ploeg en Marleen Janssen Groesbeek speciale gasten #wethemillions @DuizelinhetPark check https://t.co/JNEjuMRqJu en zeg YES! https://t.co/0cja6YIVlJ" / Twitter](https://pbs.twimg.com/media/DH2urPkXoAAJYfv.jpg)
wethemillions on Twitter: "Rick van der Ploeg en Marleen Janssen Groesbeek speciale gasten #wethemillions @DuizelinhetPark check https://t.co/JNEjuMRqJu en zeg YES! https://t.co/0cja6YIVlJ" / Twitter
![Rick van der Ploeg appointed university professor of Environmental Economics - University of Amsterdam Rick van der Ploeg appointed university professor of Environmental Economics - University of Amsterdam](https://www.uva.nl/binaries/_ht_1631776788580/cardmedium/content/gallery/personen/p/l/r.-van-der-ploeg--by-kirsten-van-santen-1.jpg)
Rick van der Ploeg appointed university professor of Environmental Economics - University of Amsterdam
![Rick van der Ploeg appointed university professor of Environmental Economics - University of Amsterdam Rick van der Ploeg appointed university professor of Environmental Economics - University of Amsterdam](https://www.uva.nl/binaries/_ht_1631776879563/content/gallery/personen/p/l/10.1177_19485506211001329-fig1.jpeg)