Reuters: With days to go before the Polish ski season kicks off in earnest, Poland's most popular mountain resort, Zakopane, is choking in smog denser than in India's capital New Delhi, one of the world's most polluted cities, Polish activists said. The European Commission said last month it was taking Poland to court over its slowness to address the issue of poor air quality caused by extensive coal-burning in homes which makes Poland's air the most polluted in Europe and poses a major risk to public health....