Even the "experts" are perplexed by this.

https://insideclimatenews.org/news/3...global-warming

The fact is that since the late 70's the Arctic has lost an average of 20,800 sq miles of sea ice per annum.
In the same time the Antarctic has gained an average of 7,300 sq miles of sea ice per annum.

And the fact that the global temperature is rising is not in dispute.