Starting as a symbolic lights out climate event in Sydney (Australia) in 2007, WWF’s Earth Hour has grown to become the world's largest grassroots movement for the environment, inspiring individuals, communities, governments, businesses and organisations to turn off their lights.

This year the campaign aims to spark conversations on ‘why nature matters’, and hopes to encourage people to value biodiversity in their daily lives.

Speaking about this year’s theme, Marco Lambertini, Director General, WWF International said: "On one hand we have the moral responsibility to live in harmony with nature, on the other nature is vitally important to everyone’s daily lives; we depend on it for the food we eat, the air we breathe and the water we drink, and so much more. But we are pushing the planet to the limit and nature is severely under threat… Earth Hour 2019 is a powerful opportunity to start an unstoppable movement for nature to help secure an international commitment to stop and reverse the loss of nature – a New Deal for Nature and People as comprehensive and ambitious as the global climate deal.”

Earth hour will take place Saturday, 30 March 2019, 8.30 p.m. local time.

For more information about Earth Hour and how you can get involved, click here.