CorSci81 writes "A study by scientists at Ohio State University indicates the possibility that ice ages may be triggered by plate tectonics. Scientists speculate that the current ice age may have been triggered 40 million years ago by the uplift of the Himalayas, and this study provides further support by linking a much earlier ice age 450 million years ago with the uplift of the Appalachian mountain range. Additionally, this study reinforces the notion that CO2 concentration in the atmosphere is a major driver of climate."
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