An interesting article.
"The American Medical Association (AMA) has just adopted an
official policy statement about street lighting: cool it and dim it...
In previous articles for The Conversation, I have described how lighting affects our
normal circadian physiology, how this could lead to some
serious health consequences and most recently how
lighting the night affects sleep...
A dark night is good for your health
Bright electric lighting can also
adversely affect wildlife by, for example, disturbing migratory patterns of birds and some aquatic animals which nest on shore."
http://edition.cnn.com/2016/06/21/he...ama/index.html