Impacts

Some birds who migrate at night, use the light from stars, the setting sun, and the moon, for navigation.

Unfortunately, artificial lights interfere with birds' natural instincts. They get drawn towards brightly lit urban places, and they become trapped in areas with little food to survive.

They also often collide with brightly lit structures, or circle them until they drop down from exhaustion.

Finally, if they are injured or stunned by the lights, they are vulnerable to predators.

Baby sea turtles, born on beaches, hatch and find their way to the sea because the moon's light reflects onto the seawater.

However, the artificial lights from urban areas confuse the turtles, and they sometimes never reach the seas — which are their homes.