Every day needs a night. Life on Earth evolved under a regular cycle of dark nights and bright days--a rhythm that is encoded in the DNA of all living things. We need light at night for human activity, but poorly designed artificial light at night is a wasteful pollutant and has serious impacts on natural ecosystems and on our own human health. 

Scientific studies have found artificial light at night to be harmful to many plants and animals, including man.

Art, religion and literature have been inspired by a starry sky. Our connection to a star-filled sky is as deeply rooted into our humanity as it is in our DNA.