by alexwg on 7/7/15, 10:37 PM with 1 comments
by DrScump on 7/7/15, 11:33 PM
When I saw "cost", I thought it might be about (or, at least, include a discussion of) the environmental and health effects of artificial light, such as problems with dark-sky astronomical viewing and disruption of natural sleep cycles.
It would also have been interesting to include artificial lighting that preceded the electric grid, such as gas, spermaceti ("whale oil"), etc.