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Amager Bakke, a waste-to-energy plant that replaced an old coal incineration plant, near Copenhagen, Denmark, produces enough electricity to power at least 60,000 homes and heat 72,000. Advanced filtration technology reduces emissions of noxious nitrogen oxides to almost zero. 4 October 2019. (Luca Locatelli, for National Geographic) NO SALES, THIS MATERIAL IS FOR SINGLE USE PUBLICATIONS IN PRINT OR FOR A TEMPORARY ONLINE PUBLICATION, AND MAY BE USED EXCLUSIVELY TO PUBLICIZE THE 2020 WORLD PRESS CONTEST AND EXHIBITION. IT MAY NOT BE PUBLISHED AS PART OF AN ARTICLE OR ANY OTHER ITEM THAT CONTAINS NO DIRECT LINK TO WORLD PRESS PHOTO AND ITS ACTIVITIES. THE PICTURE MAY NOT BE CROPPED OR MANIPULATED IN ANY WAY. KEYSTONE PROVIDES ACCESS TO THIS PUBLICLY DISTRIBUTED HANDOUT PHOTO. THE COPYRIGHT IS OWNED BY A THIRD PARTY.