The Yomiuri Shimbun

Ships anchoring at Tokyo Port emit about eight times more sulfur oxides a year than the total amount emitted by automobiles in six Tokyo wards along Tokyo Bay, the Tokyo metropolitan government's Bureau of Environment said Thursday.

The bureau's research showed the average concentration of SOx at atmospheric observation points along the waterfront in Minato Ward was more than 20 percent higher than the average of 23 wards ......
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