A few months ago I was complaining that the most visible result of the introduction of LED lighting to ‘save the planet’ seemed to be increased night-time illumination of the whole country, from forests in the Highlands to parks and gardens in towns and cities. A LightAware supporter told me that this was a result […]
Artificially lit surface of Earth at night increasing in radiance and extent
Continued improvement in the luminous efficacy of light sources and increases in gross domestic product (GDP) have resulted in tremendous growth in artificial light use over several centuries. Historically, lighting has been subject to a strong rebound effect, in which increases in luminous efficacy result in correspondingly greater light use rather than energy savings.