There have been more than one of these..........the last one ended about 10,000 years ago,,,,,,,,,,,I bet there was enough ice on the Atlantic ocean to support a human being or other animals........and since the human race is about 6 million years old...............negroid Africans just walked from West Africa to Brazil, Mexico.........etc...

Global warming IS good, it will prevent another one of these.

Ice age

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This article is about a generic geological period of temperature reduction. For the most recent glacial period commonly referred to as the Ice Age, see Last glacial period. For other uses, see Ice age (disambiguation).

An artist's impression of ice age Earth at glacial maximum. Based on: Crowley, T.J. (1995). "Ice age terrestrial carbon changes revisited". Global Biogeochemical Cycles 9 (3): 377–389.Bibcode:1995GBioC...9..377C.doi:10.1029/95GB01107.

The Antarctic ice sheet. Ice sheets expand during an ice age.

Variations in temperature, CO
2, and dust from theVostok ice core over the last 400,000 years

An ice age is a period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Within a long-term ice age, individual pulses of cold climate are termed "glacial periods" (or alternatively "glacials" or "glaciations" or colloquially as "ice age"), and intermittent warm periods are called "interglacials". Glaciologically, ice age implies the presence of extensive ice sheets in the northern and southern hemispheres.^[1] By this definition, we are in an interglacial period—the holocene—of the ice age that began 2.6 million years ago at the start of the Pleistocene epoch, because the Greenland, Arctic, and Antarctic ice sheets still