Because humans has came into artica the climas had changed so fast all of the glaciers ice are still at the momment goig down because of the gaz human impact is not just possitifly but also negativly for the polar bears and a lot of them have no more shelter and ice becuame smaller and smaller because of all the ships that goes there and that is some thing that human need to change because if it continuse like that we may never hear of polar ears ever again and that is why i think we should stop ships from traveling any where in artica and just goig in one path and that will only be one so that we wont harm the artica any more.