A critical UN conference aimed at agreeing a new global approach to climate change is set to open in Paris.
The meeting, known as COP21, will see negotiators from 195 countries attempt to finalise a new treaty over the next two weeks.
Political leaders from 147 countries will address the conference throughout Monday.
But the poorest countries say they fear being "left behind" in the push to agree a deal.
The French government will officially take over the running of the talks during the opening ceremony on Monday.