Light pollution — it’s not just the bane of light sleepers and frustrated astronomers. It also is tinkering with the biological cycles of all kinds of living things, including us! SciShow takes you behind the glare to understand the effects of artificial light and how we can fight this pollution of the night sky.
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http://today.uchc.edu/headlines/2007/nov07/graveyard/ late shift/cancer link?
http://www.yourpublicmedia.org/node/21391 – cancer link?
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3002207/ – breast cancer link
http://jnci.oxfordjournals.org/content/93/20/1557.full – cancer
http://www.medicalnewstoday.com/articles/236731.php – cancer
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2627884/ – health effects
http://darksky.org/idsp/Guidelines/IDSC%20Guidelines%20Final-May13-BP.pdf – dark sky guidelines