Environmental News Network: The World Health Organization today released mortality data from 2012 estimating that around 7 million people (one person in eight) died globally that year as a result of air pollution exposure. This finding more than doubles previous estimates and confirms that air pollution is now the worlds largest single environmental health risk. In particular, the new data reveal a stronger link between both indoor and outdoor air pollution exposure and cardiovascular diseases, such as strokes and ischaemic...