Uniting people to protect the planet.

Revisit the highlights

From icy Antarctica to the International Space Station, WWF's Earth Hour swept around the globe on Saturday 28 March 2015 (8:30 p.m. local time). Millions of Earth Hour supporters worldwide joined forces to highlight the need for climate action. Revisit the highlights and energy the movement generated across the world! 

See the highlights

Watch our impact video

In 2015, WWF’s Earth Hour grew to become the world’s largest grassroots movement for the environment. While the global lights out remains an impactful visual call-out, its true impact is starting to be seen in areas and communities fighting climate change on an everyday basis.

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24 hours, 24 stories

See the change Earth Hour created as we celebrated in different countries across the world. 

Join the movement

Take your first step towards changing climate change. Join millions of people across the world who are part of the Earth Hour movement.

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