12 febrero 2015
At many locations around the world, the night sky shines hundreds of times brighter than it did before the introduction of artificial light. Scientists have now studied variations in the radiance of the night sky and found remarkably large variations in artificial night sky brightness at the different observation sites. The introduction of light into the nighttime environment is one of the most striking changes humans have made to the Earth’s physical environment, and it is associated with several unintended negative consequences.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Jv4eAadCEHs/150212092506.htm
