Here’s what you’ll learn when you read this story:Experts believe a giant mass of hot rock known as the Northern Appalachian Anomaly (NAA) is heading toward New York City. A new study suggests that the NAA could be responsible for the split between Canada and Greenland 80 million years ago. According to the theory, the continents we know today were once connected as one big “supercontinent” called Pangea. A new study published in the journal Geology suggests that a giant, hot blob split Greenland from North America 80 million years ago—and now, it’s heading toward New York. When continents divide, hot, dense rock bubbles off the base of tectonic plates, and the “waves” move across continents’ lower surfaces.