What can be done about rising sea levels, flooding or droughts? The latest report from the Intergovernmental Panel on Climate Change (IPCC), due out at the end of February, takes a look at the options for adaptation. The window for climate policy is closing, says IPCC expert Hans-Otto Pörtner.

The second part of the IPCC's 6th assessment report will certainly spark more political debate, says Hans-Otto Pörtner, Co-Chair of Working Group II. 270 authors from around the world have reviewed more than 34,000 climate science publications for the report. On Monday, the final step begins: adoption at the IPCC plenary of member states.

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