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In April, the Illuminating Engineering Society and the International Dark Sky Association released a joint statement on the five practices to best confront light pollution. We’re here to speak with IDA’s Ruskin Hartley and the IES’ Brian Liebel about that, and the broader implications of electric light at night. Light pollution is real pollution, it’s something we create that harms people and animals, and as much as we can raise awareness among consumers we may need to call on regulators to make lighting better. We also discuss the power of solutions to breed problems, confronting biases, how to sell the more costly option, overcoming techie questions around spectral value at the order desk, and the evolutionary psychology surrounding warm light.