The study presents a deep ice core from Dome C, Antarctica, providing a climate record for the past 740,000 years. This record, extending beyond the 420,000-year period covered by the Vostok ice core, reveals significant differences in climate variability and greenhouse gas concentrations between the earlier and later periods. The earlier period, from 740,000 to 430,000 years ago, was characterized by less pronounced interglacial warmth but a higher proportion of warm periods. The transition from glacial to interglacial conditions around 430,000 years ago (Termination V) showed similarities to the present interglacial period in terms of temperature and greenhouse gas changes but with distinct patterns. The interglacial following Termination V was exceptionally long, lasting 28,000 years, compared to the 12,000 years observed in the current interglacial. The results suggest that without human intervention, a climate similar to the present could extend into the future. The study also highlights the need for further research to understand the mechanisms behind the mid-Brunhes climate shift and the mid-Pleistocene revolution, which have not been fully explained by current models.The study presents a deep ice core from Dome C, Antarctica, providing a climate record for the past 740,000 years. This record, extending beyond the 420,000-year period covered by the Vostok ice core, reveals significant differences in climate variability and greenhouse gas concentrations between the earlier and later periods. The earlier period, from 740,000 to 430,000 years ago, was characterized by less pronounced interglacial warmth but a higher proportion of warm periods. The transition from glacial to interglacial conditions around 430,000 years ago (Termination V) showed similarities to the present interglacial period in terms of temperature and greenhouse gas changes but with distinct patterns. The interglacial following Termination V was exceptionally long, lasting 28,000 years, compared to the 12,000 years observed in the current interglacial. The results suggest that without human intervention, a climate similar to the present could extend into the future. The study also highlights the need for further research to understand the mechanisms behind the mid-Brunhes climate shift and the mid-Pleistocene revolution, which have not been fully explained by current models.