MSU's Folk co-authors Florida Museum of Natural History study
During the ice ages of the Pleistocene, the Florida peninsula regularly expanded to twice its current size as glaciers grew near the planet’s poles, only to be reduced to a series of islands as melting ice returned to the sea during warm periods. All told, glaciers advanced and retreated 17 times, and according to a new study, the resulting environmental instability may have contributed to the incredible plant diversity found in Florida today.