Greens say, rightly, that the best scientific assessment today is that global warming is occurring. Yet never in history have scientists accurately predicted what will happen 100 years later. A century ago no scientists predicted the internet, microwave ovens, TV, nuclear explosions or antibiotics. It is impossible, even stupid, to predict the distant future.
That scientific truth is rarely mentioned. Why? Because the global warming movement has now become a multi-billion dollar enterprise with thousands of jobs and millions in funding for NGOs and think-tanks, top jobs and prizes for scientists, and huge media coverage for predictions of disaster.