Polish Cities suffer from pollution from coal

(THIRD PARTY MUSIC MAY REQUIRE CLEARANCES) - VOICED: Shows exterior shots Colliery Marching Band walking through streets of Katowice playing instruments on cold morning on Miners day and people watching performance. Interior shots Service of Thanksgiving in church with miners and families praying and receiving sacrament. Exterior shots piles of coal being moved around surface of mine. Exterior shots smoke pouring out of chimnies and smog filling air and reducing visibility over city skyline. Exterior and interior shots of Environmental Activist Renata Nitrebska talking to residents about poor air quality and dangers of smog. Exterior shots Muzeum Slaskie and cultural centre built from a converted former mine. Interview with Marching Band Leader Andrzej Pisarzowsk speaking on coal mine closing down so band might end. Interview with miner Arek Lubaski and daughter of miner Zenata Fonfara speaking on closure of the mine. Interview with Mayor of Katowice Marcin Krupa speaking on changes in city of Katowice and moving economy away from coal mining. Graphics sequence showing poor air quality readings across communities in Poland. (THIS CLIP CONTAINS BLACK HOLES - THIRD PARTY CONTENT) As home to 33 of the EU's most polluted cities, Poland might seem like an unlikely destination to hold this year's UN Climate Change Conference. Host city Katowice is covered with a thick layer of smog thanks to its past reliance on coal as a source of energy. But, could the area soon move towards a more environmentally friendly future?