More than 300,000 people demonstrated in New York on Sunday, calling for tough action on climate change, with thousands more marching in cities around the world
UN climate change chief says letter could send a strong signal about the moral imperative to reduce carbon emissions
Christiana Figueres tells audience at St Paul's Cathedral that time is running out to 'bend the emissions curve'
UN climate chief issues a rallying call to faith groups to help secure a global deal in climate change in 2015
Talks begin with developing nations demanding greater transparency for negotiating process
MPs urge Bank to investigate threat as UN climate change chief accuses some oil and gas majors of neglecting their fiduciary duty
Christiana Figueres, head of the UNFCCC, urges businesses to take their message directly to heads of state
Christiana Figueres says $1 trillion a year is required for the transformation needed to stay within 2C of warming
Agreement reached on loss and damage mechanism, despite opposition from developing nations
New draft decision urges governments to spell out plans to curb emissions for Paris treaty