Search Results for “Ken Walczak” | DarkSky International

Image depicting the Urban Night Sky Place at night overlooking Maple Lake.

Palos Preserves Named the World’s Largest Urban Night Sky Place

Press release

Forest Preserves and Adler Planetarium earn the Urban Night Sky Place designation awarded by the International Dark-Sky Association

August 25, 2021

Light pollution from greenhouses at night

A land of perpetual false dawn

Light Pollution

Commercial greenhouses contribute significantly to light pollution, often surpassing the output of entire towns. Regulations and technology can help …

April 26, 2021

Board of Directors

About

Meet the people that make up the 2021 International Dark-Sky Association (IDA) Board of Directors including President Diane Knutson.

August 18, 2025

A man at night, nearly hidden in the glare of a park light.

Outdoor lighting at night doesn’t do what you think it does to reduce crime and increase safety

Effects of light pollution

There is no clear scientific evidence that increased outdoor lighting deters crimes. It may make us feel safer, but …

October 17, 2023

Find your local Delegate

Who we are

DarkSky Delegates are your local points of contact.

August 19, 2025