“…First, it can have harmful effects on human health (i) when outdoor lighting illuminates the interior of houses (light trespass), disturbing the sleep of city dwellers (Argys et al, 2020) ; and (ii) when it emits blue light, which often makes up LED light, disturbing the production of melatonin and therefore the quality of sleep (Davis et al, 2001;Navara and Nelson, 2007), or damaging the retina of the eye (ANSES, 2019). These effects, in addition to other urban nuisances (e.g., urban heat islands, air pollution, noise pollution), have significant effects on the observed rates of obesity, heart disease and cancer (Rajput et al, 2021;Han and Lee, 2021). In addition to health effects, light pollution harms astronomical observations by reducing the visibility of galaxies, nebulae or other astronomical objects (Gallaway et al, 2010).…”