It is true that there is evidence that a tropical rain forest existed on the east shore of the gulf of Alaska. That was 40-50 million years ago. It took millions of years to go from that tropical age to the cold climate of just 50 years ago. The problem is we are seeing warming in just a few decades not thousands of millions of years as would be the norm. The change we are seeing today is very rapid and accelerating at an alarming rate. Warming is real and worsening much to fast. It will take a Global change in how we use our resources or we will pay the consequences in our lifetime.