What are the laws on light pollution my neighbor leaves bright spot lights on that shine into my yard all night long. Can he be made to turn them of?

Laws regarding light pollution vary by location, but many municipalities have regulations that address excessive outdoor lighting that can disturb neighbors. You may want to check your local zoning ordinances or nuisance laws, which often include provisions about the brightness and direction of outdoor lights. If the lights are causing a significant disturbance, you could discuss the issue with your neighbor or file a complaint with your local authorities. Mediation might also be a viable option to resolve the conflict amicably.