We might just melt the north pole yet! Every year around late February to early March, Arctic ice hits its maximum coverage, the point of greatest area and thickest layers, before the sun finally starts cautiously peeking over the horizon to begin its annual challenge to winter’s reign. The ice will begin to recede and thin, torpid polar bears will dig out of snow caves with young in tow, and sea-going mammals like whales and walruses will soon patrol the shallow seas. How far that ice gets at each winter maxima is a big factor on how much it will dwindle through the spring and summer.