The ice age was not exactly a climatic event. It was caused by the hot oceans after the Genesis judgment/flood coupled with constant volcanic eruptions filling the sky with dust, which blocked much of the sun’s heat.
Not likely to ever happen again.
Amazingly, all the modern day aquatic live survived being made into acid soup....
There’ve been 20 such cycles in the last couple of million years AND we are about 5,000 years overdue for the next one to start.