The effects of artificial light are manifold. Assigning upsides and downsides is left as an exercise. https://pubmed.ncbi.nlm.nih.gov/?term=light+pollution+hu

The effects of artificial light are manifold. Assigning upsides and downsides is left as an exercise. https://pubmed.ncbi.nlm.nih.gov/?term=light+pollution+human https://pubmed.ncbi.nlm.nih.gov/?term=light+pollution+human Also note humans seem to have an inherent "light budget" the cheaper it is, the more we use. https://duckduckgo.com/?q=historic+light+cost+v.s.+use&t=ffsb&ia=web https://duckduckgo.com/?q=historic+light+cost+v.s.+use&t=ffs...