In a piece today in The Conversation,
Fred Watson writes on the impact light
pollution is having on astronomy, wildlife and humans.
As Fred reminds us, 2015 is the International Year of Light and
Light-Based Technologies and until the advent of radiotelescopes
in the "1930's, every scrap of information about the universe came to us in the form of light".
Article here -
https://theconversation.com/darkness...stronomy-51989