Photos: Smoggy Beijing skyline
Beijing skyline9
Credit: Getty Images
BEIJING, CHINA - FEBRUARY 19: A general view of the skyline of central business district on February 19, 2013 in Beijing, China. Large amounts of organic nitrogen compounds were found in Beijing smog in January, the worst month in recent years. Most alarming is that the Chinese Academy of Sciences says they've found organic nitrogen particles, a key component in the deadly photochemical smog in Los Angeles in the 1950s and the Great Smog in London. (Photo by Feng Li/Getty Images)
Other Slideshows
Photos: Entertainment pics of the week
Photos: NBA coach lists 14,000 sq. foot mansion
Photos: Hats at Royal Ascot Opening Day
Photos: Brazilian protesters violently clash with police
Photos: Parts of St. Louis area flooded after storms
Photos: Shark attack off Texas beach
