Quote:
Originally Posted by RedDevil
An ice age will only happen when CO2 levels are well below 250 ppm.
A volcano might bring the temperature down for a while due to the ash, but it will also likely add more CO2 so once the ash has washed out of the atmosphere we're worse off than before.
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Maybe. CO2 has a greenhouse effect, but from what I've read scientists still believe that volcanic activity has caused ice ages in the past including during a similar hot, high-CO2 period, the Jurassic period transition to an ice age.
The last "mini ice age" supposedly took place in the 6th century, lasted 125 years and is also thought to have been caused by volcanic activity.