No, the icecaps have been there much longer than the last interglacial period. We have core data going back at least 400,000 years. I'm finding quotes that the Antarctic icecap has been there for the last 5 million years, which jives with what I know of continental drift and how it shapes the global climate, but I'd have to dig deeper for hard numbers.
Anyway, the current interglacial is well over halfway finished. We're well on our way back towards the next ice age, wheee!
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Anyway, the current interglacial is well over halfway finished. We're well on our way back towards the next ice age, wheee!