<P> A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances . Interglacials, on the other hand, are periods of warmer climate between glacial periods . The last glacial period ended about 15,000 years ago . The Holocene epoch is the current interglacial . A time when there are no glaciers on Earth is considered a greenhouse climate state . </P> <Table> <Tr> <Td> </Td> <Td> Look up glaciation in Wiktionary, the free dictionary . </Td> </Tr> </Table>

What is the difference between an ice age and an interglacial period
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