WWF recommendshttp://www.wwf.se/vart-arbete/klimat/earth-hour/klimatsmarta-recept/1624847-klimatsmarta-recept-infor-earth-hour-2016
http://www.wwf.se/vart-arbete/klimat/earth-hour/klimatsmarta-recept/1624847-klimatsmarta-recept-infor-earth-hour-2016