Quoted: Also..
I remember reading on some MIT professor who thinks we'll be going into a 'global cooling' stage in the coming decade. |
Global cooling IS a possibility, but it would take SEVERAL decades to achieve. Assuming global warming skyrockets and the polar ice caps melt at a massive rate (we're talking global flooding), then this would introduce vast quantities of fresh water into the Atlantic ocean. The gulf stream normally brings warm north near the surface, then the water cools and go deep and travels south, like a conveyor belt. Introducing so much fresh water (which is cold in its own right) would drop the salinity, making the water less dense; instead of sinking and traveling south, the cold ocean water would pool in the north Atlantic and eventually lower temperatures in the northern hemisphere to the point that we go into another Little Ice Age like the one we suffered from the 1300's to 1850.
This would be worse than any of the hocus pocus global warming predictions. Crop failure would be massive and global (but primarily restricted to the northern hemisphere). Some areas would be inaccessible by sea because of the ice choking the waterways (the main reason the vikings in Greenland died out). Plague and famine would ravage entire nations; people weakened by malnutrition would be more susceptible to disease, and would be crowded indoors to stay warm. You do the math. Summers would be shorter and cooler, winters would be longer and harsher; the further north you go, the worse it gets. Whole regions of Canada and Russia would be uninhabitable.
The likely result would be a major world war as desperate nations fought over resources; food, medicine, petroleum, and metals would be more valuable than money. More Machiavellian nations would go to war simply so they would have fewer mouths to feed as a result.
The resulting ice age may not be as severe as anticipated, but it would still have dire consequences for most of the planet, just like the last one.