Lights tuned to emit specific colors and brightnesses can support human capacity to perform specific activities better. That is the basis of the Human-Centric Lighting (HCL) industry, which has been growing at an increasing rate in recent years. If HCL can prove its abilities, it could soon be commonplace in our buildings and cities, creating a healthier, happier, and more productive society. Two verticals lead the way for HCL; workplaces and healthcare. For businesses, HCL promises to make employees more productive, giving a overall boost to the entire enterprise. Investment decisions, however, require evidence, not just promises. While the scientific understanding is still evolving, a number of recent studies reveal that there is at least a psychological effect, if not a biological one, from lighting in the workplace. In a survey of more than 1000 adults in the UK, a convincing 77% of respondents claimed they felt that lighting in the workplace affects their productivity. […]