Light pollution occurs when human activity results in an excessive amount of outdoor artificial light. This type of pollution can be damaging to the environment and human health just the same as other pollutants.

• Unnecessary outdoor lighting contributes to high energy waste
• Light pollution disrupts nocturnal animals, prevents animals from navigating using the sun, disrupts the migratory habits of birds, and may contribute to the death of insects attracted to the light
• Light pollution may also disrupt an individual's circadian rhythm and cause damage to the eyes