What does it take for Supreme Court Chief Justice John Roberts Jr. to realize that global warming has arrived? In his dissent of the Court ruling that the Environmental Protection Agency (EPA) has the authority to regulate carbon dioxide from automobile emissions he argued that his judgement “involves no judgement of whether global warming exists, what causes it, or the extent of the problems.” 

Is John Roberts Jr. so busy that he does not have time to learn that according to the world’s leading scientists it’s now fact that humans are the major cause of global warming.