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Light pollution is insidiously creeping into our lives and like other forms of pollution, it impacts the way we live. It’s slowly and subtly changing our natural environment by altering patterns of nocturnal wildlife, increasing greenhouse gas emissions and affecting human health. To add insult to injury, it’s also costing us a great deal of money. 

For years, scientists have been decrying the dangers of air pollution and water pollution. We have seen the impacts that a buildup of harmful greenhouse gases like carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and a suite of halogen-bearing gases (like fluorocarbons) that are derived from industrial activities can bring.  Evidence of man-made climate change confronts us on a daily basis as devastating heat waves, droughts, and forest fires devastate our nation. Water pollution from an overuse of toxic chemicals by industrial, agricultural and non-professional users have poisoned waterways, limited access to clean drinking water and disrupted eco-systems. Within the last 15 years however, another insidious form of pollution has been gaining the attention of researchers around the world. They have discovered that night-time light pollution is a serious threat with wide-ranging impacts to human health as well as to our natural environment. Many researchers believe that “immediate measures should be taken to limit artificial light at night in main cities and inside houses.”