been on this summer's delayed games in tokyo, but the winter olympics are scheduled to take place in beijngking part there are likely to be exposed to potentially hazardous pollution. the international olympic committee say they are working with local organizers to address the issue. drew savage reports. just under a year to go until the 29th winter games... the first to be held in china. 190 events, in seven different sports — but athletes competing in beijing next year could be doing so in potentially hazardous, polluted air. an academic report, shared with the bbc, looked at air quality data over the past five years and found poor to hazardous conditions up to half the days in february — and that's a concern."the challenge for athletes with air quality is that they are at higher risk because they are outdoors and they're exerting themselves. tiny particles in the air that you can't see lodge themselves in your airways and in your lungs and that can be damaging in the long term. it also can impede performance in the immediate. if we are expecting athletes to perform at a high level this i