Globe and Mail: Gordon Campbell, the embattled Premier of British Columbia, received some big-name support yesterday afternoon for his controversial carbon tax: Bill Clinton, former president of the United States. Mr. Clinton called Mr. Campbell’s efforts to combat climate change “the greatest economic generator you could embrace.” “I know he’s taken some heat,” Mr. Clinton said of Mr. Campbell’s critics. Mr. Campbell’s Liberal government on July 1 brought in a carbon tax on fossil …