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AAP
AAP
Environment
Poppy Johnston

Earth hour turns 20 at pivotal moment in climate action

WWF President Dr Adil Najam says Earth Hour's message is about far more than conserving energy. (Bianca De Marchi/AAP PHOTOS)

Twenty years ago, Sydney became the birth place of one of the world's best-known viral environment campaigns.

In 2007, public awareness of climate change was sharpening.

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