March demanding action on climate change.
Thousands march in cities from New Delhi to New York demanding action on climate change.
Forty thousand campaigners were marching in London on Sunday 21st September to demand urgent action on climate change. Celebrities including actress Emma Thompson and musician Peter Gabriel are joining campaigners and British flood victims at the march and rally. It was one of 2,000 events taking place in 150 countries around the world ahead of a United Nations climate summit next week.
Some 100,000 people are expected to get involved in New York City - the summit's location - to demand leaders take action to tackle rising temperatures.
The UN summit has been convened by Secretary General Ban Ki-moon in a bid to drive action and momentum towards talks in Paris in 2015.