posted on Dec, 10 2010 @ 11:03 AM
Humanity would most certainly survive. The Neanderthal culture spread to every climate on the globe except glacial, and even hunted and trekked
across glaciers to get to isolated pockets of food.
But the OP asked, would modern man survive, which is a different question entirely. Basically, all of the climate zones would shift south. If
it were a full-blown glaciation, ALL of Canada would be under a sheet of ice eventually a mile thick.
There is a body of emerging research (in the definite minority) that claims that glaciers can appear and spread at a rate of up to several miles per
year. If that were true, an "ice age" could hit in a single generation.
If half of the humans starved to death or succumbed to epidemics, there'd be too few of us to man the infrastructure. No oil refining, no
electricity generated, no cable news. Sure the survivors would benefit from the knowledge-base of the modern age, probably even preserving much of
our science and medicine.
But how "modern" would those survivors really be?