Business Green: A row has broken out between two of the leading candidates to take over from California governor Arnold Schwarzenegger when he steps down next year, after Republican primary candidate and former eBay chief executive Meg Whitman said that she would reverse the state’s flagship climate bill. The pledge drew immediate fire from rival gubernatorial candidate and San Francisco mayor Gavin Newsom, who accused Whitman of “backward thinking” on climate change that would jeopardise …