The Illuminating Engineering Society (IES) and the International Dark-Sky Association (IDA) announced a strategic collaboration to address the global issue of light pollution that negatively affects our environment and the human condition. The two parties adopted Five Principles for Responsible Outdoor Lighting and seek to guide the outdoor lighting industry in the U.S. and beyond to be more socially and environmentally responsible. The five principles addressed that light at night should be with clear purpose and used in necessary areas in low level and warmer colo...