You know you're getting old when you remember all the years the experts had proof positive on global cooling.
I would really like to see the data and methodology behind the conclusion that arctic regions have warmed up 4-7 degrees in the last 50 years. I would bet that the hard evidence for this 4-7 degrees is very weak. It's quite a coincidence that the greatest "warming" is supposedly happening in the arctic regions where very few people live and there's almost no historical temperature data. There's no scientific consensus among climatology experts that global warming is actually happening. The consensus is among non-expert scientists who are getting most of their information from the news media.