When will the ice age will come back again in earth?
The main cause of any ice age is a continent over the pole. Since Antarctica is over a pole, that land gets really cold and can’t warm up very fast. Usually, there is water over the poles, and the cold water can easily circulate and regulate the planet better. Land doesn’t circulate, so the cold just gets colder. So, Antarctica’s occupation of the pole, starting at ~5 Ma (million years ago) has lead to our current ice age. In the Permian (250 Ma), it was the tip of Gondwanaland (southern Africa/South America). The older glaciations are more speculative (see link). As long as a land mass occupies a pole, we’ll be in an ice age and experience cycles of glacial maxima and minima. We will stay in the pattern for about another few million years (though our greenhouse gas emissions may cancel that out). The fluctuations (maxima/minima) you get (on a ~10 000 to 100 000 year scale) within an ice age, which most mistakenly assume entails the whole ice age, is caused by climate patterns and astr
