I absolutely accept scientists' conclusion that humans are causing climate change.  And yes, in general I defer to experts in their given field.  But Dr. Hall is an expert in orthopedics, not in public policy, and I disagree with where he is coming from on this.  As I mentioned earlier I have one question for him and all other specialists in Anchorage: How do you justify earning 3x-10x the salary of the general practioners in town who charge much less money for a much longer, in depth visit.  I find this disparity unconscionable and I believe it is a huge reason behind our astronomic health care costs.