The study's findings, published in Nature online, confirm that atmospheric CO2 declined during the Eocene - Oligocene climate transition and that the Antarctic ice sheet began to form when CO2 in ...

Rapid global warming marked the boundary between the Palaeocene and Eocene periods 55.6 million ... expulsions of methane and also carbon dioxide that had accumulated over time in the stratified ...

If emissions continue unabated, carbon dioxide levels could meet or exceed values associated with past warm climates, such as the Cretaceous period (100 million years ago) or the Eocene epoch (50 ...