Inside the political struggle at the IPCC that will determine the next six years of climate science

The UN's climate science advisory group, the Intergovernmental Panel on Climate Change (IPCC), is currently meeting in Bulgaria to decide on a timeline for its next "cycle" of reports over the rest of this decade. That decision should have been taken in January, but government divisions arose over aligning IPCC outputs with UN climate negotiations, at a meeting that the IPCC chair described as "one of the most intense" he had experienced.