Somehow I missed that. Ten. ("Could", so maybe that's the upper end of their estimates.)

Two teams of American climatologists published research confirming that the West Antarctic Ice Sheet has begun to collapse, and the U.S. Global Change Research Program released its third National Climate Assessment, which noted that average temperatures in the United States had increased by between 1.3 and 1.9 degrees Fahrenheit over the past century, predicted that in the absence of human intervention those temperatures could rise by another 10 degrees during the coming century, and attributed recent adverse weather events such as floods and droughts to climate change caused by humans.

Harper's Weekly Review, May 13, 2014