Drone Pictures of protest Balloons against the new construction of a coal fired power plant for Dow Chemicals in Stadersand. Greenpeace volunteers release 2000 black and blue ecological helium balloons to visualize CO2 and pollutant emissions. The balloons are made from bio-degradable natural materials. The planned main fuel for the plant is hard coal. Banner reads:" No new coal power plant in Stade".The protest is part of the worldwide action day "Rise for Climate".