This video shows areas around the world turning off their lights for Earth Hour.
Shown in the video are Bangkok, Beijing, Kuala Lumpur, Jakarta, Moscow, Doha and Zagreb.
More top news
Cold with some misty cloud by dawn
Mum's across the nation have shared their delight at having actor Tom Hardy read another bedtime story on children's TV channel CBeebies.
Scottish boxer Jordan Coe, 20, was found dead in a heavy tracksuit after apparently trying to lose water weight ahead of a fight.