Marcin Korolec, president of COP19/CMP9, reacts at a high-level segment session at the 2013 UN Climate Change Conference on Nov. 20, 2013. Polish Prime Minister Donald Tusk on Wednesday reshuffled the cabinet, replacing seven ministers and merging two ministries in the government, in a bid to boost the country's sluggish economy. Environment Minister Marcin Korolec will be replaced by Maciej Grabowski. (Xinhua/Zhang Fan)