SLUMPING GROUND (IMAGE) Columbia Climate School Caption A new study documents evidence of a massive release of carbon from permafrost as temperatures rose at the end of the last glacial period Credit Dentren/CC-BY-3.0 Usage Restrictions Credit must be given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.