It is crucial to start right away with the implementation of the mitigation measures. We have simulated the future GEO environment in case no measures are taken. This is named the "business-as-usual" scenario. In the top panel a much cleaner space environment can be observed, if the number of explosions is reduced drastically and if no mission-related objects are ejected. However, to stop the ever increasing amount of debris more ambitious mitigation measures need to be taken. In the long run, spacecraft and rocket stages will have to be returned to Earth after completion of their mission.