There are no more northerly latitudes than the north pole, Anita.
:-)

It's already been far warmer in the past millennium than the temperatures that those who believe the global warming alarmists are concerned about. The result was indeed longer growing seasons. And icebergs calve from glaciers and travel south every year, and have since long before our species showed up. They're beautiful and (if you enjoy the freshest water on earth) very useful.