Reuters: Poland’s addiction to high-polluting coal contrasts sharply with its hosting of U.N. talks on a global climate treaty to promote clean energy, but its government says it is doing its best to break the habit. Some 11,000 delegates are in Poland’s western city of Poznan for a December1-12 meeting which marks a halfway point in efforts to agree new climate goals in Copenhagen at the end of next year. And the fact that one of Europe’s biggest lignite opencast mines, the Konin mine, …