1) Mexico City is one of the world's smoggiest capitals.

2) Tianjin is rather smoggy.

3) Skies remained smoggy and traffic was bumper-to-bumper during afternoon rush hour on freeways and Chang An Avenue, which cuts through the heart of the city.

4) Released during Hong Kong's traditionally smoggy winter months, the report is the most ambitious so far to gauge public attitudes about pollution, which frequently obscures the famous harbor.

5) WENZHOU, China — Here in this smoggy coastal metropolis, the nouveau-riche heart of entrepreneurial China, the latest sign that one has really made it is not a Benz, or even a Bentley.

6) The thick nitrogen atmosphere holds fog, mist, smoggy haze and rain clouds.

7) This smoggy, mile-high metropolis, with a teeming population of 14 million in the metropolitan area, has apartment blocks that stretch far into the surrounding mountains.

8) The clogged streets and smoggy skies of Asia's cities make it hard to imagine any great drives in the region. But every time Karen Yu travels, she and her husband make time to get behind the wheel.

9) We learned that automobile drivers kept their lights on even during the smoggy sunshine,(http:///smoggy.html) while their eyes burned from acidic fumes.

10) CHANGSHA, China — Until very recently, Hunan Province was known mainly for lip-searing spicy food, smoggy cities and destitute pig farmers.

11) Officials have given warning that many more factories could be closed if more drastic measures are needed to clear the (still smoggy) air.

12) Recent research done at the University of Texas has shown that staying indoors may actually be more harmful to one's health than being outdoors even in smoggy cities.

13) The result has been more blue - sky days during the Olympics than smoggy ones.

14) The presence of an underground ocean could help explain how Titan replenishes methane in its smoggy atmosphere.

15) However, the solution is only a quick fix; once the controls are lifted, Beijing will most likely return to its smoggy norm.

16) FEW European visitors to Beijing visit its ancient astronomical observatory, perched on a grey stone tower amid smoggy snarls of traffic.

17) With less than a month to go until the start of the Beijing Olympics, the air in the Chinese capital remains gray and smoggy.

18) But short - term studies of death from acute exposure on smoggy days have yielded mixed results.

19) During the past few days, the city has continued to experience mostly smoggy skies.

20) We were sitting in my office overlooking Shanghai's financial district one smoggy day.

21) Coal, steel, oil — we think of these old-economy industries, and we picture pollution. Smoggy skies, fouled rivers, toxic waste.

22) The result has been more blue-sky days during the Olympics than smoggy ones. Beijing residents have noticed - and they like it.