A protestor takes part in a silent demonstration demanding a better environment for the future generations during the annual UN climate talks at the National Stadium in Warsaw, capital of Poland, Nov. 12, 2013. Polish Environment Minister Marcin Korolec said on Nov. 14 that it was a transparent process to involve business into the annual UN climate talks in Warsaw, amid criticism that the coal-reliant country was pursuing its own national agenda. (Xinhua/Zhang Fan)