As the earth warms and our hunger for oil and other natural resources grows, the Arctic—once a peaceful repose for Santa—is already a crisscross of territorial claims that could get even more complicated in coming years according to a new map drawn up by researchers at Durham University, who say it is the only geographically accurate map of its kind.

This summer, for the first time in recorded history, there may be no ice on the North Pole. In a dramatic symptom of climate change, the thick frozen layer at the pole is likely to melt away entirely, turning the top of the world from sea ice to sea water.