yea......... to get things straight day after tommorrow is horribly in-accurate. There are different aspects which are 100 percent true but it has huge gaps in logic and reality.if a large freshwater ice chunk fell into the ocean it waould change the salinity of the ocean a slightly change some ocean currents possibly damping the guld stream that bring warm water up the east coast. that they said, and is true. But this would simply create less evaporation and less storms for a year or so, not a huge cyclone that pulls cold air down from the upper atmosphere and freezes everything, besides when u bring air down from up high it warms up because there is more pressure upon it. to answer ur question the next major ice age has already begun. only we arent feeling it at all because of the off set of global warming. many people beleive in fact that if we werent going into an ice age right now the global average temp could be much higher (15-30F higher) its liekly we wont feel much global warming at all because as we shit on out planet more and more with greenhouse gases our planet goes deeper and deeper into an ice age, but in 5-10k years when we start to come out of the ice age itll get real warm real quick. alot of this is speculation and theories about what could and is very likely to happen nothing in this subject is fact, we wont notice any difference in snowfall for the most part, in fact more then 50 percent of ski areas will prob get more snow every year because the temps are warmer therefor more evaporation therfor more storms and accumulation coastal resorts may get less snow and more rain because they are always right around the 32f mark temp wise, thats my 2 cents