Remembering Baltimore’s smoky, sooty years when the city had the second-filthiest air in the country.
Southeast Asian typhoon and forest fires, NYPD officer killed, Biden says he won’t run in 2016 | Oct. 21
The day in photos around the world.
China continues to suffer a pollution crisis, with Beijing shrouded in acrid smog. Authorities have introduced anti-pollution policies and often pledged to clean up the environment but the problem has not eased. In October 2013, clouds of smog blanketed Harbin in China’s Heilongjiang province. According to reports, visibility was cut to 33 feet.