Nobody seriously doubts anymore that the world is warming, and that consequently climate everywhere is changing. But what might not be so well known is that global warming has caused something quite remarkable to occur in the middle of the North Atlantic. It has resulted in a huge area of cooling in the ocean to the south and east of Greenland, and off to the west of Ireland. Since the Atlantic Ocean and what happens there is the key determinant of the weather in Ireland, there is no question that this cooling phenomenon is already having a big influence on...