Nature Climate Change, Published online: 03 June 2024; doi:10.1038/s41558-024-02011-4
It has been postulated that there is a threshold temperature above which permafrost will reach a global tipping point, causing accelerated thaw and global collapse. Here it is argued that permafrost-thaw feedbacks are dominated by local- to regional-scale processes, but this also means there is no safety margin.