Climate change deniers have been using the increase in the extent of ice in Antarctica as evidence that global warming can’t be happening. That is happening because a change in the wind patterns is blowing cold air over an area that formerly did not have such winds. The new ice is thin and contains littler water.
What is more interesting it the ice that has been there for thousands of years. There is a huge volume of this and were it to all melt it would raise the sea levels by several meters. NASA reports that a massive ice shelf that started breaking up in 2002 is going to be completely ge by 2020. Here is an article from NASA about this.