BBC: Scientists and officials are meeting in Denmark to edit what's been termed the "most important document" on climate change.
The IPCC Synthesis Report will summarise the causes and impacts of - and solutions to - rising temperatures.
It will be the bedrock of talks on a new global climate deal.
But there are concerns that political battles could neuter the final summary.
Over the past 13 months, the IPCC has released three major reports on the physical science, the impacts and the potential...