Factors
Entities
Scientific AmericanA GenerationEfficient energy useNational Archives and Records AdministrationNational Park Service10 Downing StreetRedditSolar powerJimmy CarterGeorge W. BushThe New York TimesRonald ReaganWhite HouseBarack ObamaChinaPresident of the United StatesDonald TrumpSolar water heatingMuseum PieceClimate changeNational Museum of DenmarkThe Atlanta Journal-Constitution

