Source: BBCNews
Hundreds of thousands of people have marched worldwide to demand action to stop climate change, the day before a UN summit starts in Paris.
One campaign group says more than 570,000 protesters took part in marches on all the main continents.
Activists want action at the Paris talks to limit the rise in the average global temperature to 2C (3.6F) above pre-industrial levels.
In Paris itself, more than 200 demonstrators were arrested after clashes.
