I think you are comparing apples and tomatoes.  The overarching point, as made by the movie and the Nobel award committee, is that without either reversing our carbon output or perparing for more climate catastrophes or refugees (read Huricaine Katrina) we will bequeath to our children and grandchildren a global disaster affecting as many as 300 million people. Doesn't really matter who the messenger is or if a few data points are in dispute, I want to work to avoid the problem, versus shooting the message or the messenger.  More energy needed on Climate Change Solutions