Over the past couple centuries, artificial light has gradually become ubiquitous in our environment. Modern humans are constantly exposed to artificial light emitted by smartphones, lightbulbs, computers, and other technology. It’s easy to forget that these light-emitting devices are extremely novel additions to our habitat; for 99 percent of our evolutionary history, we had no exposure to artificial light, regardless of its provenance. This therefore highlights our genetic maladaptation to environments that are saturated with