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
A baby boy was found abandoned in a church's nativity manger with his umbilical cord still attached.
At least 30 people, mainly patients, were killed when US forces began firing at the facility "mistakenly" thinking it was a Taliban base.
From pensioners to first-time buyers to public sector workers, a rundown of how today's Autumn Statement and Spending Review affect you.