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Towering air purifier will bring fresh air to smog-choked Xi'an
[The Times] An experimental air purifier more than 100m tall has cut pollution levels in a Chinese city, offering the possibility of reducing smog across the country.

The tower, the world’s largest purifier, improved air quality in a 10 sq km area over the past few months, according to the scientist leading the project.

It was the brainchild of China’s most respected science institute, whose researchers hope the technology, once proved effective, can be used in hospitals, schools and residential areas.
Posted by: Bright Pebbles 2018-01-21
http://www.rantburg.com/poparticle.php?ID=506164