Yeah I read a similar one; because of warming, the glaciers and melted ice melt, causing the sea to desalinate a bit, which in turn makes the gulf stream stop. This stops warm water from going north and vice versa, making the north colder and the south warmer. It was implied that this caused the ice in the last ice age to travel southward.

I mean I hope it won't happen in my lifetime, there were kilometers of ice on my country.