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First ever UK Earth Hour Live on the night live streaming, featuring live switch offs from London and across the world, community events, and an exclusive McFly performance.
See how Earth Hour spread around the world and some of our highlights in the UK.
More landmarks across the UK signed up than ever before.
Daisy Lowe and other celebrities show their support! And the Prime Minister, David Cameron showed his support for a renewable energy future.
What people are doing in the dark
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See who’s showing their support near you!
Check out our brilliant interactive map to see who signed up to join WWF’s Earth Hour 2013. You can zoom in to find out what happened across the country.
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Make sure you’ve told as many people as possible. Because a healthy planet isn’t just good for polar bears or tropical tree frogs. It’s essential for us all.
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