CBC Technology & Science (26 January 2019)

Cannabis greenhouses are creating light pollution, but there are solutions

"It's become very clear to us that there are rhythms that are established by light and dark that are set to natural sources like the sun," said John Barentine, who lives in Arizona and is director of public policy at the International Dark-Sky Association. "And by exposing ourselves to artificial light during those times of day when the body and the brain don't expect them to be there, it can have the effect of beginning a cascade of biological processes that might lead to certain kinds of chronic diseases.
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"We are animals that exist in a natural world and we're disrupting that natural world and that has distinct consequences."

Read more: ​hwww.cbc.ca/news/technology/cannabis-greenhouses-light-pollution-1.4993407ttps://www.cbc.ca/news/technology/cannabis-greenhouses-light-pollution-1.4993407