About 15 kilometers away from the city centre in the very south of Berlin there is the NABU Marienfelde conservation area. As part of the project Ranger Bjoern offers a "green school" for children to discover nature not far away from the big city. For a feature in "Stadtleben", a magazine run by DEGEWO, I was lucky enough to join Ranger Björn and some kids for a tour through the green countryside.