The supply of fuel to the Arctic zone is facilitated by the region's rich geological resources, which include hydrocarbon reserves estimated at 10% of the world's reserves i.e 9 billion tons of gas and oil. Thus, the Port of Churchill, located on the Hudson Bay's west coast, plays an even greater role in providing fuel for the people of Nunavut as its navigable season has gone from six weeks to more than three months in a few years, following climatic warming.