In 1981, George Kukla of Columbia University warned of a new ice age.
One year later he said shrinking Antarctic sea ice was a signal that we were all going to die from global warming.
Government scientists are much smarter now though, and they know that expanding Antarctic sea ice means we are all going to die from global warming.
Note that this genius is arguing the exact opposite of polar amplification, which is a core principle of global warming theory.
So you have the warming world and a cold Antarctica, and the difference between the two is increasing