Mountain air worse than city: study

An American doctor says Beijing's air pollution is no worse on its clogged ring roads than along its tree-lined canals.

Dr Richard Saint-Cyr, 41, a family physician for the International Medical Center in Beijing, conducted a personal study using a handheld air particle scanner and published the findings on his blog titled 'My Health Beijing' (www.myhealthbeijing.com)

He wrote that pollution levels on ring roads were not higher than on surrounding roads.