A view over the city of Zurich, February 2009
Keystone
Skyglow from the city of Zurich lights up the sky over the village of Tagelswangen, April 2009
Keystone
Fog and light pollution over the city of Geneva, January 2010
Keystone
The illuminated Turbine Square in Zurich, February 2008
Keystone
Swiss Prime Tower in Zurich, November 2012
Keystone
Night-skiing in Arosa, canton Graubünden, February 2008
Keystone
Insects swarm in front of a light in Gösgen, canton Solothurn, May 2011
Keystone
Stars above a sea of fog seen from the Fronalpstock mountain in canton Schwyz, March 2011
Keystone
LED street lights in Igis, canton Graubünden, January 2013. The first project of its kind in Switzerland massively reduces the energy required as well as light pollution
Keystone
Christmas time in Bern's Old Town, December 2011
Keystone
Neon signs in Hong Kong, which according to a study by the University of Hong Kong has the worst light pollution in the world
Keystone
Office blocks in Montreal. Some cities in North America have introduced standards to limit outdoor night lighting
AFP
Light pollution seen from space
Keystone/AP/NASA
These striking images of light pollution reflect a form of environmental damage that has serious consequences for humans and wildlife.
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