> "We found that the likely culprit was a major drop in greenhouse gases in
> the atmosphere, especially CO2. From the temperature data and existing proxy
> records indicating a sharp drop in CO2 near the Eocene-Oligocene boundary,
> we are establishing a link between the sea surface temperatures and the
> glaciation of Antarctica."
I don't get it, what would cause that sharp a drop in CO2
concentrations. How do they know the CO2 drop was the cause of the
Global Cooling?
Maybe an asteroid hit or vocanic activity could have blocked out the
sun, and the after effects could have been the drop in CO2?
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