Light pollution is unwanted or excessive artificial light. It is a form of waste energy that can have adverse effects on birds and other migratory animals and degrade environmental quality. Learn how artificial light affects human health, wildlife, and the environment. Find out how to reduce light pollution and protect the night sky with tips and resources from National Geographic. Interactive world light pollution map . The map uses NASA Black marble VIIRS, World Atlas 2015, Aurora prediction, observatories, clouds and SQM/SQC overlay contributed by users. What is light pollution ? Discover more about this problem and learn methods you can use to help reduce light pollution in your area.
