Beijing, China - Peoples Republic of
CHINESE WOMAN WEARS A SCARF TO FEND OFF DUST IN BEIJING.
A Chinese woman wears a scarf to fend off dust as she rides a bicycle in Beijing February 26, 2004. Though each country regulates its own air quality, pollution knows no boundaries, and dirty air from Asia can easily cross the Pacific to pollute the western United States, experts say. Pictures of the month February 2004 REUTERS/Guang Niu PP04030043 ASFO CHINA