October 15, 2013, 1pm PDT
A new report by the European Environment Agency points to progress in cutting the continent's air pollution problem. However, up to 98% of Europe's urban residents are exposed to hazardous air, and in places like Bulgaria the danger is acute.
October 3, 2011, 6am PDT
World annual death toll due to particulate pollution from indoor and outdoor sources is 2 million people each year, according to a new report from the World Health Organization.