Cities turn streetlights red to protect nocturnal ecosystems

International Dark Sky Week is hailed as a global celebration of the night and a call for less light pollution. In some cities internationally, local governments are trying to find a solution to lighting the night can better serve critical wildlife ecosystems and humans alike. Malcolm Brabant reports from Denmark. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy