Cooling-down mechanism of past extreme global warmings

A research group at the University of Tokyo has shown that increased marine productivity brought an end to the rapid and transient global warming events in the early Eocene period, occurring about 56 million to 52 million years ago, by effectively removing carbon dioxide in the atmosphere. This outcome should prove helpful in understanding how human-made CO2 emissions impact the Earth's environment and geochemical cycles, the paths in the Earth's interior and on its surface that elements follow, and how the Earth system recovers to its original state in a timescale lasting several tens of thousands of years or longer.