Since its inception in 2002, IDA’s Fixture Seal of Approval Program has provided certification for dark sky-friendly lighting that minimizes glare, reduces light trespass, and doesn’t pollute the night sky. These dark sky-friendly fixtures provide… Read more
IDA Announces Lighting Guidelines for Electronic Messaging Centers
Today the International Dark-Sky Association released lighting guidelines for electronic messaging centers (EMCs). The guidelines, developed in line with Illuminating Engineering Society’s off-roadway sign recommendations, are the culmination of a two-year IDA process to address… Read more
The European Union Adopts New Guidance On Roadway Lighting Installations
by John C. Barentine, Ph.D. IDA Director of Public Policy When white light-emitting diode (LED) technology appeared on the outdoor lighting market late in the last decade, the world was on the edge of economic… Read more
Tucson, Arizona, U.S. Skyglow Reduced 7% after Street Light Conversion
John Barentine, Director of Conservation at the International Dark-Sky Association, is the lead author of a recent study published online by the Journal of Quantitative Spectroscopy and Radiative Transfer. Although Barentine has previously published papers… Read more
Call for New Members for the International Dark-Sky Association Technical Committee
The International Dark-Sky Association Technical Committee provides guidance to the IDA Board, Executive Director, and staff on policies and guidelines related to outdoor lighting practices. This highly skilled team of lighting specialists and environmental scientists… Read more
Five Years of Satellite Images Show Global Light Pollution Increasing at a Rate of Two Percent Per Year
Five years of advanced satellite images show that there is more artificial light at night across the globe, and that light at night is getting brighter. The rate of growth is approximately two percent each… Read more
Nobel Prize Awarded for Discovery of Molecular Mechanisms Controlling the Circadian Rhythm
The Nobel Assembly at Karolinska Institute today announced the 2017 Nobel Prize in Physiology or Medicine is awarded jointly to Jeffrey C. Hall, Michael Rosbash and Michael W. Young “for their discoveries of molecular mechanisms… Read more
LEDs In Your Community Webinar
Grassroots supporters from 15 countries joined IDA technical director, Pete Strasser, for a free webinar about LED lights, technology, and how to promote responsible lighting in local communities on August 31. Click here to access… Read more
BBC Explores True Cost of LED Lights
Brian Wheeler of the BBC shares the story of Karen Snyder, and her friend, Delores Bushong whose neighborhood in Washington DC recently installed 4,000 Kelvin LED streetlights. Snyder and Bushong oppose the bright lights and want their… Read more
Night Skies in Arizona and Beyond
Arizona resident, Mike Powell, recently wrote a column for the Paris Review describing dark skies in Arizona. Powell describes the unique harshness of the desert sun and the surprising dark nights Arizonan’s have been able to… Read more