Light pollution driven by climate change | Science

Global light pollution caused by artificial lighting at night increased by 7 to 10% per year between 2011 and 2022 (1). In addition to increasing the risk of chronic diseases in humans (2), light pollution can attract or repel insects and birds, with the potential to reshape their movement and alter habitat selection and distribution (3), and can harm marine species and ecosystems (4). Climate change–driven heat waves (5) have led to increased human activities at night, when temperatures drop, which has created more light pollution in vulnerable areas. Light pollution policies should limit additional lighting, despite increasing heat waves.

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