Business Green: The Norwegian government may have secured environmental plaudits for its pledge to become one of the world’s first carbon-neutral countries. But that has not stopped it angering green groups this week, after it refused to condemn a Canadian tar sands investment by Norwegian oil firm StatoilHydro, in spite of pleas for it to intervene and use its two-thirds ownership of the firm to block the move. Deputy petroleum and energy minister Robin Kaass told Reuters journalists that it would …