The United Nations climate change conference, known as COP24, will take place in Katowice, a historic city in Silesia, the coal-mining heart of Poland, on December 2 to 14. Around 30,000 scientists, politicians, diplomats and business people from 200 countries will attend the 24th climate summit. The Katowice conference is expected to take stock of the results being achieved collectively by countries to respect the objectives of the Paris accord - to limit global warming to less than 2 degrees centigrade from pre-industrial levels - and of the commitment to speed up the replacement of old energy sources, including coal, with clean sources.