New paper shows major glacier was smaller than the present during the Medieval Warming Period

The Hockey Schtick
"A paper published today in the journal Climate of the Past used radiocarbon dating to determine the age of trees uncovered in 2003 by retreat of a major glacier located in Southern Patagonia. The authors conclude that the glacier was smaller than the present during the Medieval Warming Period, and that the trees were covered by advance of the glacier during the Little Ice Age from 460 to 250 years ago."