Arctic sea ice has been consistently shrinking since at least 1980. So have the Greenland and West Antarctic ice sheets. The East Antarctic ice sheet has by contrast been constantly growing since records began, which is probably where you got your factoid from. But this is due to local phenomena, such as the Antarctic ozone hole, increasing westerly wind strength and increasing snowfall. East Antarctica is one of the few regions which seems to have escaped the effects of climate change (so far).

There's almost no doubt that the world is warming overall due to human activity. The fossil fuel industry doesn't like this, so they put out propaganda to counter facts. Do your own research :).