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
Surveillance footage shows the alleged poisoning of North Korean leader Kim Jong-un's estranged half-brother and his shocked reaction.
Very mild this Monday
A severe storm has caused flash flooding in the popular Spanish holiday resort of Malaga.