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| Version 4 | Version 5 |
|---|---|
| Beijing 'failing pollution test' | Beijing 'failing pollution test' |
| (1 day later) | |
| Just a month before the start of the Beijing Olympics, the city is still failing to meet international air quality standards, the BBC has found. | Just a month before the start of the Beijing Olympics, the city is still failing to meet international air quality standards, the BBC has found. |
| When Beijing bid for the Olympics in 2001, it said its air would meet World Health Organization (WHO) standards. | When Beijing bid for the Olympics in 2001, it said its air would meet World Health Organization (WHO) standards. |
| The BBC put this to the test using a hand-held detector to test for airborne particles known as PM10. | The BBC put this to the test using a hand-held detector to test for airborne particles known as PM10. |
| We found that the city's air failed to meet the WHO's air quality guidelines for PM10 on six days out of seven. | We found that the city's air failed to meet the WHO's air quality guidelines for PM10 on six days out of seven. |
| These particles are caused by traffic, construction work and factory emissions. They are responsible for much of this city's pollution. | These particles are caused by traffic, construction work and factory emissions. They are responsible for much of this city's pollution. |
| On one of these days, the pollution reading was seven times over the WHO's air quality guideline. | On one of these days, the pollution reading was seven times over the WHO's air quality guideline. |
| Beijing's air will be fundamental to the success or failure of this city's Games The BBC's James Reynolds Reynolds' China: Testing pollution By comparison, recent readings done in London - the site of the 2012 Games - all fall within the WHO's guidelines. | Beijing's air will be fundamental to the success or failure of this city's Games The BBC's James Reynolds Reynolds' China: Testing pollution By comparison, recent readings done in London - the site of the 2012 Games - all fall within the WHO's guidelines. |
| Beijing insists that there is still time to get things right. | Beijing insists that there is still time to get things right. |
| Later this month it is imposing a series of emergency air-quality measures which will take cars off the streets and shut down building sites. | Later this month it is imposing a series of emergency air-quality measures which will take cars off the streets and shut down building sites. |
| One official has told the BBC that he is confident that Beijing will still fulfil its clean air promise. | One official has told the BBC that he is confident that Beijing will still fulfil its clean air promise. |
| But this city does not have all that much time left. | But this city does not have all that much time left. |