Choking smog all but shut down one of northeastern China's largest cities on Monday, forcing schools to suspended classes, snarling traffic and closing the airport, in the country's first major air pollution crisis of the winter. (scientificamerican.com)
BEIJING (Reuters)- Choking smog all but shut down one of northeastern China's largest cities on Monday, forcing schools to suspended classes, snarling traffic and closing the airport, in the country's first major air pollution crisis of the winter. (scientificamerican.com)
China's battle against a persistent air pollution crisis, which all but shut down a city of 11 million this week, is being hampered by tough weather conditions, an environmental official said on Tuesday. (scientificamerican.com)