Flights were suspended at two airports after an environmental activist group launched protest actions at several German airports on Thursday.The activists infiltrated the airports of Berlin-Brandenburg, Stuttgart, Nuremberg, and Cologne-Bonn, with an average of two activists per airport.According to a German police spokesman, air traffic at Nuremberg Airport has been suspended until further notice.For his part, a spokesman for Cologne-Bonn Airport announced that air traffic at the airport had been halted due to the protest, explaining that unauthorized persons had managed to reach the flight area on the airport grounds.On Aug. 1, cargo flights were halted for about three hours at Leipzig-Halle Airport in Germany, due to a protest by climate activists.The Last Generation movement has listed several countries across Europe and North America where similar disruptions are planned as part of a protest campaign calling for the German government to pursue a global agreement to exit oil, gas and coal by 2030