A new study shows that more than 2/3 of designated Key Biodiversity Areas in the world are impacted by light pollution, in some cases severely:
Citizen science offers a powerful tool for monitoring light pollution. Chapter 24 of the new book, Citizen Science: Innovation, Open Science, Society, and Policy by Hecker et al. reviews the various citizen science projects addressing light pollution. Lots of other interesting applications in this free download, too.