They've stopped melting (see diagram below). And even if they were melting, that would simply mean that the climate was getting warmer, just as it did in the Medieval Warm Period. The article writer needs to find out what the word "Anthropogenic" means.
Since we're dealing with Eugene Robinson here, odds are, he'd STILL think it was a derogatory term for blacks.
Educate this layman please.
Without measuring instruments as accurate as today and satellite imagery and all the sophisticated computers in existence during the medieval period, how on earth did they know that the world was warming then ?
Also, how did they know the extent of the polar icecaps ?