This is one man's mission to document the city's smog.
But the country isn't in the clear yet.
Microsoft and IBM have developed smog forecasting technology that can help governments make the air breathable again.
For me at least, WeChat became a central feature of the trade mission. My Chinese contacts immediately found me. They shared their "moments," personal and professional.
Jia teamed up with Greenpeace East Asia in hopes of strengthening public awareness of air pollution. Pictures of Beijing's