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NYT Syndicate

Rather than the screens, sensors, microchips and Big Data typically employed by Smart City designers, Daan Roosegaarde works with a more fanciful tool kit: smog-eating machines, light-emitting plankton and solar-sensitive paint.
"When we talk about innovation today, it's screen-based, but Smart City is not about another app or microchip," said Roosegaarde, whose design firm, Studio Roosegaarde, is based in Rotterdam in the Netherlands."Big Data is important, but things can go wrong if we only focus on technology and forget to connect with people and to connect people with their environment."
It is that sort of philosophy that led Roosegaarde and his partners to create the Smog Free Tower, the world's first outdoor air cleaner. Just 23 feet tall, it looks like a miniature chrome-latticed skyscraper. But inside, a powerful vacuum uses ionization technology to suck up smog, filter out the dangerous particles and release purified air. Roosegaarde contends that in 36 hours it can eliminate 70 to 80 percent of the impurities in the air from an area the size of a football stadium.
The tower was co-designed by Roosegaarde and various experts, then tested in Rotterdam. But now it is about to take on a much bigger challenge: China's Ministry of Environmental Protection recently commissioned Roosegaarde to temporarily install the tower at a public location in Beijing in September to see how well it performs in the catastrophically smoggy air that is choking China's largest cities. It will then go on a sort of smog-fighting tour, with related educational events, to four other Chinese cities over the next year.
Neither the Chinese nor Roosegaarde are under the illusion that the tower will make any real difference in China's overall air quality.
Liu Guozheng, deputy director of the China Forum of Environmental Journalists, a part of the environment ministry, said the Chinese would have to undertake a much more ambitious effort to get at the roots of smog."However, the role of the Smog Free Tower as a warning sign is still very significant," he said."It is a reminder of our mission and responsibility to fight against smog issues."
Ma Jun, an environmental activist in Beijing, echoed that view, calling the Smog Free Tower project a form of"performance art" aimed at raising awareness about air pollution.
But Roosegaarde considers it a first step.
And aside from whatever effect it has on the environment, the tower is significant for the entrepreneurship it represents.
"This signals how cities are finding new ways to solve problems, paving the way for new ideas from a much more diverse community of entrepreneurs, innovators and citizens," said Sascha Haselmayer of Citymart, a New York-based consultancy that helps cities solve problems and share solutions.
Roosegaarde said both the Chinese government and his group would monitor the air around the tower, which uses 1,400 watts of electricity per day, roughly that of an electric kettle.
The project's prototype, which was based on existing technology for purification systems in hospitals and parking garages, took two years to develop at a cost of"around a million euros," Roosegaarde said. In addition to the crowdfunding, the city of Rotterdam; the Port of Rotterdam; Stichting Doen, a Dutch foundation; and Studio Roosegaarde provided financial support.
An early adviser to Studio Roosegaarde was Bob Ursem, a nanoparticles expert at the Delft University of Technology, who devised a method for positively charging particles to extract them from the air.
Roosegaarde said the idea for the Smog Free Tower came about during a 2013 trip to Beijing, when he learned the blanket of smog was so bad that the city's children could not play outdoors for part of the year.
The tower has prompted inquiries from other cities, including Mexico City, New Delhi and Mumbai in India, and Santiago, Chile.
The project typifies the Roosegaarde gestalt: technology and social relevance, connectivity and poetry joined together to create a way of experiencing the urban landscape."What stories will people tell breathing the cleaner air around the towers?" he said."In my life, physical experiences changed me, made me look at things differently. My job is to create this atmosphere."
Apart from the Smog Free Tower, other Roosegaarde projects that are eliciting international interest are the Smart Highway and the Van Gogh Bicycle Path, in collaboration with Heijmans, the Dutch infrastructure services company. Both projects use paint that is charged by sunlight during the day and glows at night.
The highway paint (the pilot project is in the Dutch city of Oss) glows green and is bright enough to eliminate the need for streetlights. The bicycle path (in Eindhoven) is a multicoloured swirl inspired by Van Gogh's work.
Another project involves harvesting light-producing marine plankton called dinoflagellates to produce a liquid that glows at night."We are working on improving the quality of life for the organism, the intensity of light it creates and eliminating the smell," he said."The idea is to light up a bicycle path with a river of light that is 100 percent natural."
He describes himself as a futurist focused on the present.
"I'm not saying I have all the answers. It's about thinking in proposals, not opinions. You do it by building stuff, showing it."
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28/07/2016
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