Light pollution is the excessive and long-term use of artificial light. In cities, there is excessive light pollution, but this happens everywhere, even on empty roads with street lamps or in your home. In the Arctic, night-time lasts for several months of the year in winter and daytime lasts for many months (See story 6.5
). There is less light pollution in the Arctic than elsewhere but we do not know if there is an effect of the big, new, industrial areas that have lights on all throughout the dark Arctic winter.