Many citizens actively support and encourage environmental awareness. Almost every person has heard about separate garbage collection, the need to abandon plastic and the importance of switching to “green” modes of transport. The issue of light and noise pollution in cities remains equally important but is not discussed as often. Banner lights, signs and searchlights illuminate the sky, and noise pollution has caused hearing loss in 24% of adults in the United States. These issues are being addressed at both the local and national levels. In mega-cities, acoustic maps and light atlases are being created and light and noise restrictions are being imposed. Nevertheless, urban growth and an increasing demand for mobility indicates that mega-cities have yet to develop effective strategies to overcome problems of light and sound pollution.

• What innovative solutions are the leading cities taking to combat light and noise pollution? 
• How do noise regulations account for the rights of night workers?
• How do sound and light spots make the city more comfortable?