Category: Light pollution | Page 11 | DarkSky International

Stars and the Milky Way above a hillside of Saguaro cactus east of Peridot, Arizona.

Rediscovering the Night Sky in Middle Age

Light Pollution

By Guest Writer Suzanne Wright Before moving to Arizona, I lived my entire adult life in the bright lights …

August 27, 2015

Owl sitting on a branch.

Join Us for Our Google+ Hangout “Light Pollution’s Effect on Wildlife”

Light Pollution

As part of the International Year of Light Cosmic Light theme, IDA has been holding Google Hangouts with world-renown …

August 25, 2015

Downtown main street of Liberal, Kansas sports new streetlights with old-time character, but which pour light out in all directions and up into the sky. With no shielding the exposed globes cause much glare that makes seeing difficult.

Citizens Push Back on LED Lighting

LEDs

By Chris Kyba, IDA board member and light pollution researcher Citizens around the world are raising hell over LED …

August 19, 2015

A nighttime satellite image of Florida showing excessive lighting that creates skyglow.

Planning Our Nights

Light Pollution

Florida Planning magazine (published by the American Planning Association Florida Chapter) features a great article about protecting the night …

August 5, 2015

Take Action to Prevent ‘Projecting Change’ in NYC

LEDs

A planned outdoor light projection event this Saturday, August 1, will bathe New York City’s iconic Empire State Building …

July 31, 2015

This screen shot from the NASA Blue Marble map shows the incredible amount of light coming stemming from Phoenix, Arizona

IDA Pens Op-Ed on Phoenix’s New Lights

LEDs

On Saturday, 13 June 2015, the Arizona Republic published the following guest editorial by IDA Executive Director Scott Feierabend …

June 16, 2015

Conference Attendees Gather and Talk Before the Meeting Starts

Light Pollution Researchers Gather In Québec

Light Pollution

Light pollution researchers from around the world met at Jouvence, Québec, Canada from 26-28 May 2015 for the second …

June 10, 2015

Streetlights on city street at night create glare making it hard to see.

Street lighting

Light Pollution

Streetlights can cause light trespass — light that falls where it’s not intended, wanted, or needed.

August 19, 2025

Three Pronged Street Lamp

New IDA LED Lighting Practical Guide

LEDs

The light-emitting diode (LED) is transforming the way we light our cities and towns offering a once-in-a-lifetime chance to …

April 15, 2015

IDA Issues New Standards on Blue Light at Night

Press release

New rules strengthen IDA’s Fixture Seal of Approval program. TUCSON, AZ 01 December 2014 — The International Dark-Sky Association …

December 1, 2014

A shielded LED outdoor streetlight against a setting sky.

IDA Responds to 2014 Nobel Prize for Physics

Light Pollution

Tucson, AZ 7 October, 2014 –The Nobel Committee announced today that it has awarded the 2014 Nobel Prize for …

October 7, 2014

Natural darkness and human well-being

Light Pollution

With the rise of artificial light at night, our natural rhythms are being disrupted—while more research is needed, these …

November 17, 2025