How Can Humans Stop Light Pollution? Home Guides

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Light pollution is any artificial light that is intrusive, unsafe or wasteful (see References 1). City dwellers can attest to the disorientation caused by light clutter, or groupings of bright lights. Nighttime drivers are all too familiar with glare, the unsafe side effect of excessively bright or unshielded lights. Misdirected light from a neighbor's property that infiltrates your yard or home makes you the victim of light trespass. Sky glow is an accumulation of light that spills into the atmosphere and affects your enjoyment of a starry night (See References 2). Eliminating light pollution is impossible, but people can take steps to curtail it.

Timing Is Everything Outdoor lighting is only necessary when you're outside or as part of a crime-prevention strategy. Prevent light pollution by installing fixtures equipped with motion sensors or incorporating timers that provide you with light only when you need it. Dimmer switches allow you to softly illuminate areas where you spend time outdoors after dark. (See References 3)

Design Matters The types of light fixtures you install around the exterior of your home greatly affect the amount of light pollution you generate. Shielded fixtures prevent light from spreading upward, where it isn't needed. Since these types of fixtures concentrate light where it's used, lower-wattage bulbs are often sufficient. (See References 3)

Less Is More While nighttime lighting increases safety, poor-quality lighting can work against you. Harsh lights that create glare can temporarily blind you, as well as cause shadows that provide prime places for someone else to hide. As a result, don't be fooled by thinking that brighter is always better when it comes to creating a safe environment around your home. (See References 3)

Be a Good Neighbor Ensure that your lighting doesn't infringe on your neighbor's enjoyment of the dark, and don't be afraid to speak up if you're the victim of bothersome light trespass. Broach the subject gently, though; suggesting a more efficient fixture might enlighten him. If not, mention that an alternative lighting fixture could not only help you, but also his utility bill. If your neighbor is uncooperative, ask your municipality about light ordinances that your neighbor may be violating. (See References 3)

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