I've recently come to believe in the possibility of the Gulf Stream being stronger in the recent past and warming the Arctic Ocean. It would explain why Mammoth remains are found on the New Siberian Islands, which lie between the Arctic coast of Siberia and the North Pole. Could a decrease in the Earth's orbital eccentricity from around 40,000 years ago have reduced this meridianal heat transfer mechanism to the levels of today? Is a stronger Gulf Stream which warms the Arctic been in existence from at least the last interglacial, 120,000 years ago, until relatively recently? If so, presumably cold currents must have circulated around Greenland, North America and Europe, since ice sheets are known to have existed from about this time. A warm Arctic AND ice sheets over North America and Europe? Is this speculation complete madness, or is it simply the unknown truth?