By ENVIRONMENT REPORTER SARA PHILLIPS.
The United Nations climate meeting in Paris from November 30 to December 11 is possibly the last chance the world will have to create an international treaty to prevent dangerous climate change.
Temperatures are a whole degree above the long-term average and scientists predict more warming unless the world acts to limit fossil fuel use and forest clearing.
Climate change has the potential to affect all of humanity as well as countless plants and animals the world over.
Here is everything you need to know about the Paris climate talks:
In 1992, a new global treaty was drawn up at a United Nations meeting in Rio de Janeiro to try to address climate change. It became known by the not-very-catchy name of the United Nations Framework Convention on Climate Change or UNFCCC.
Since then countries which signed up to the convention (which is almost the whole world) have met regularly. This meeting in Paris is the 21st Conference of the Parties, making it COP21. Much like any 21st, there will be many long, rambling speeches.
Why are they meeting in Paris?
The location for the COP moves around each year. In 1997 it was in Kyoto, where the famous Kyoto Protocol was written up. In 2009 it was in Copenhagen, a meeting which ended in anti-climax. It was decided two years ago in Warsaw that the 2015 COP21 meeting would be in Paris. Country representatives also have smaller meetings all throughout the year mostly in Bonn, Germany.