Buildings in the western Japanese city of Osaka, some 2,250 kilometers (1,400 miles) southeast of Beijing, are shrouded in dense smog Wednesday, February 26, 2014 a day after parts of northern China suffered a sixth straight day of severe pollution. The readings of particulate matter known as PM2.5, a key measure of pollution reached 104 micrograms per cubic meter in Osaka in the morning. The World Health Organization considers 25 micrograms a safe level. (Photo by AP Photo/Kyodo News)
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