Study Reveals Carbon Cycle Mechanism That Could Trigger Ice Age
Study published in Science on September 25, 2025, finds rain dissolves rocks to capture CO2.
Simulations show overcooling exceeding 6°C as CO2 drops, strongest at intermediate oxygenation states.
Andy Ridgwell says hotter planets speed rock weathering, absorbing CO2 and cooling the planet.
Human CO2 emissions cause short-term warming, but the mechanism may accelerate the next ice age.
Study links mechanism to ancient events, testing 10,000 billion tons over 10,000 years.
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