Since then, there have been a few isolated cases where government funds were appropriated for such projects. In one of these, systematic observations of nocturnal insects were conducted along the Catalan Mediterranean coast. Here, the entomologists found that some moth species have an unusually strong attraction to bright lamps and thus become easy prey for bats and nocturnal birds. Indeed, the survival of some species, whose population has already been decimated, is endangered. So there is sufficient cause to rethink the excessive lighting of our urban areas.
Outdoor lighting is intended primarily to safeguard our security.
This end is best achieved by a targeted, effective use of lighting fixtures - and not by turning night into day. Reducing urban lighting to the essentials would not only bring about an improvement in overall security, but also a reduction in costs, as it would require fewer materials and less electricity.