Science & ClimatePhys.org•1 min read•11/10/2026 (2h ago)

How the Southern Ocean helped fuel Earth's warmest climate in 65 million years

How the Southern Ocean helped fuel Earth's warmest climate in 65 million years
60-Word AI Digest

About 50 million years ago, Earth experienced its warmest climate since the extinction of the dinosaurs. Global temperatures were more than 10°C higher than today, and atmospheric CO₂ concentrations reached around 1,600 parts per million. But what kept CO₂ levels so extraordinarily high for millions of years? An international research team led by the Max Planck...

Key Takeaways

  • About 50 million years ago, Earth experienced its warmest climate since the extinction of the dinosaurs.
  • Global temperatures were more than 10°C higher than today, and atmospheric CO₂ concentrations reached around 1,600 parts per million.
  • But what kept CO₂ levels so extraordinarily high for millions of years?

About 50 million years ago, Earth experienced its warmest climate since the extinction of the dinosaurs. Global temperatures were more than 10°C higher than today, and atmospheric CO₂ concentrations reached around 1,600 parts per million. But what kept CO₂ levels so extraordinarily high for millions of years? An international research team led by the Max Planck Institute for Chemistry has identified an important piece of the puzzle: the Southern Ocean.

Original Publisher Attribution

This summary was curated from Phys.org.

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How the Southern Ocean helped fuel Earth's warmest climate in 65 million years — Loop60