China fights big smog with big air purifier

China has a found a novel way to tackle its massive air pollution problem: Putting up a giant air purifier the size of an industrial smokestack in the middle of a smog-plagued city.

China smog climbs to perilous levels on eve of climate talks

Northern China choked under some of the worst smog this year on Monday, with Beijing's pollution soaring to 22 times healthy limits, triggering the city's second-highest air alert on the eve of global climate change talks.

China smog around 50 times WHO recommendations (Update)

A swathe of China was blanketed with dangerous acrid smog Monday after levels of the most dangerous particulates reached around 50 times World Health Organization maximums, with energy use for heating blamed as winter sets ...

Image: Measuring clouds and aerosols from the space station

Clouds can be observed from the International Space Station moving across Earth's surface, as in this image of New Zealand taken by Expedition 42 Flight Engineer Samantha Cristoforetti. Other tiny solid and liquid particles ...

NASA's CATS eyes clouds, smoke and dust from the space station

Turn on any local TV weather forecast and you can get a map of where skies are blue or cloudy. But for scientists trying to figure out how clouds affect the Earth's environment, what's happening inside that shifting cloud ...

Dangerous pollution levels blight Chinese city

Thick smog enveloped a major Chinese city for a third day Tuesday, with schools and a regional airport shut and poor visibility forcing ground transport to a halt in places.

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