Fuller, G., Raghanti, M. A., Dennis, P. M. et al. 2016. A comparison of nocturnal primate behavior in exhibits illuminated with red and blue light. Applied Animal Behaviour Science 184, 126-134.
Over evolutionary time, light from the sun, moon, and stars has provided organisms with reliable information about the passage of time; but modern artificial lighting has drastically altered these cues. Evidence is accumulating that exposure...