Just two years after reaching its high, Antarctic sea ice extent for the month of January hit a record low. The southern ice cap occupied an area of 4.04 million square kilometers, 1.19 million square kilometers below the 1981 through 2010 average. The exact reasons for the lows are unknown although by now it is widespread knowledge that climate change is a major factor.
Humans should be concerned by this because it is yet another statistic proving the harm that we are doing to our environment. Antarctica is considered a continent and we are doing more damage to it than plate tectonics could.