ClimateDenmarkFaroe Islands' traditional grass roofs reduce CO2 emissions02:08This browser does not support the video element.ClimateDenmarkWolf Gebhardt12/20/2024December 20, 2024Rooftops are laid out like lawns, and they need mowing regularly! The roofs are green in more ways than one: They turn carbon dioxide into oxygen, improving air quality and cutting emissions. And they boast other qualities, too.Copy linkAdvertisement