Guardian: The government of New Zealand responded with some irritation to my column last week, which castigated a national strategy for meeting its Kyoto climate targets by allowing greenhouse gas emissions to rise by 22% from 1990 to 2007. All was well, it said. The 600,000 hectares of forests that were planted in the 1990s would soak up all the excess CO2 – around 90m tonnes of it between 2008 and 2012. In fact, the country was likely to be ahead of its Kyoto target of stabilising emissions …