A major cause of the worldwide increase in light pollution (Everything from our sleep to our hormones relies on the dark. So why are we so intent on destroying it?, 31 October) has been the widespread introduction of LED lighting, especially the use of blue-rich street lighting and outdoor lighting. This has also resulted in the social exclusion of those unable to tolerate LED lighting, many of whom are now unable to access places of employment, recreation, worship, education and health.
Light matters. It affects every aspect of our health and wellbeing, and has a profound impact on the environment. The charity LightAware addresses this as a human rights and equality issue. We believe that public spaces including buildings and streets should be accessible to all.
John Lincoln
Trustee, LightAware
