when the last river has been killed, will we know - environmental message written on the building of a small dam - switzerland

alpine background banner been bio building bundle business care change climate collection concept conservation dam decoration decorative della development earth eco ecological ecologist ecology ecosystem energy environmental global globe green has idea killed know last lettering love message natural nature organic our passera phrase planet plant pollution poster protect protection recycle recycling renewable riale river save schweiz slogan small sustainability sustainable swiss switzerland the tree vegan warming waste when wild will world written zero