page_title: Earth Hour
hierarchical_section_title: Earth Hour
caption_attribution_description: Deutsch: Stunde der Erde 2010: Botanische Garten von Curitiba, Paraná, Brasilien English: Earth Hour 2010: Botanical Garden of Curitiba, Paraná, Brazil Español: La hora del planeta 2010: Jardín Botánico de Curitiba, Paraná, Brasil Français&#160;: Une heure pour la planète 2010: Jardin Botanique de Curitiba, Paraná, Brésil Italiano: Ora della Terra 2010: Orto Botanico di Curitiba, Paraná, Brasile Polski: Godzina dla Ziemi 2010: Ogród Botaniczny w Kurytyba, Paraná, Brazylia Português: Hora do Planeta 2010: Jardim Botânico de Curitiba, Paraná, Brasil Українська: Вогні оранжереї ботанічного саду під час «Години Землі» в Куритибі, Парана, Бразилія 2010
context_page_description: The Earth Hour is an event organized by the World Wide Fund for Nature. It is held on the last Saturday of March every year. The WWF asks people to shut off their lights and appliances for one hour. They want to raise awareness for climate change. It was started in 2007.
context_section_description: The Earth Hour is an event organized by the World Wide Fund for Nature (WWF). It is held on the last Saturday of March every year. The WWF asks people to shut off their lights and appliances for one hour. They want to raise awareness for climate change. It was started in 2007.
caption: The metal structure of the greenhouses of the curitiban Botanic Garden (Curitiba, Paraná, Southern Brazil), with its lights off on March 27, 2010.