Octopus DNA Reveals West Antarctic Ice Sheet Collapse During Last Interglacial

Genetic analyses of an Antarctic octopus show that the West Antarctic Ice Sheet (WAIS) collapsed during the Last Interglacial ~129,000 to 116,000 years ago when temperatures were only about 1 degree Celsius (°C) warmer than preindustrial levels.

The findings suggest that WAIS collapse and resultant sea-level rise could be...