CounterPunch: By reports, 2012 was the warmest year in recorded history in the U.S. The last decade was the warmest on record globally. Even for those arguing other hypotheses also fit the warming climate, the consistency of warming, the joint probability in statistical terms, must give pause because the consequences are (1) very far along already and (2) potentially catastrophic in excess of previous human experience. Alternative hypotheses not only need to be plausible in a general sense, they require specific...