Here are some simple things you can do to reduce light pollution:
-Turn off your outdoor lights when not needed for safety.
-Replace your private street lamps and flood lights with motion-activated lighting.
-Use low-glare lighting fixtures for outdoor light. One company that offers star-friendly outdoor lighting is Starry Night Lights.
-Write to companies in your area about reducing their use of polluting lights. Lighting billboards from above, rather than below, can make a huge difference for wildlife.