Y. HAMEL, PUBLIPHOTO DIFFUSION / SCIENCE PHOTO LIBRARY Y. HAMEL, PUBLIPHOTO DIFFUSION / SCIENCE PHOTO LIBRARY
Industrial air pollution. White plumes billowing out from industrial chimneys and partly blocking out the Sun. The plumes are white because water vapour in the hot exhaust gases condenses as it makes contact with the cooler air. The water vapour itself is harmless but invisible chemicals within it are not.
Model release not required. Property release not required.