>>The challenge for scientists now is to understand the conditions required to make that possible.
Glaciers grow when more snow falls than melts.
Either heavier snowfalls or colder temperatures will do the job.
If we lived in a world where the poles were mostly ice free and it appeared that in the future the ice sheets would grow and wipe out all of those ice free forests and eco systems, do you think these same people would be screeching end of the world global freezing doom stories at volume 11?
It requires only heavier snowfalls as the colder temperature is always there… colder temperatures in the more souther points of the northern hemisphere is also required to extend the range of ice.
But ask yourselves, how does the precipitation in the form of snow and ice, sleet, hail, GET into the atmosphere in larger amounts in the first place to create heavier snow and ice falls? The answer is greater heat in the tropics to evaporate water from the oceans to put that water vapor into the upper stratosphere where it migrates both north and south to convert to heavier ice crystals and precipitates and falls.
In other words, increases in greenhouse gases are MORE likely to cause a new ice age than melt the ice caps.