Outdoor air pollution contributes to the deaths of an estimated
1.6 million people in China every year, or about 4,400 people a day, according
to a newly released scientific paper. The paper maps the geographic sources of
China's toxic air and concludes that much of the smog that routinely shrouds
Beijing comes from emissions in a distant industrial zone, a finding that may
complicate the government's efforts to clean up the capital city's air in time
for the 2022 Winter Olympics. The authors are members of Berkeley Earth, a
research organization based in Berkeley, California.