Outdoor lighting, as a beefed-up version of the nightlight, can make us feel safe or provide ambiance. However, many exterior lights are left on due to forgetfulness. Others are bright enough to illuminate the cast of Hairspray, contributing to light pollution.
Put your exterior lights on a timer to save energy, switch to less intense lights, or use photosensors (they'll turn the lights off during daylight hours). If you're concerned about safety, consider motion sensors or other security measures. Efficient lighting options like
compact fluorescent lightbulbs (CFLs) are now available as flood lights, according to
Energy Savers, and can save energy while withstanding the elements. Or explore
solar-powered lights for free electricity!
If you need inspiration to turn lights off or use less intense ones, check out this map of light pollution worldwide from
NASA (click for larger version):