By Sarah Begley
1.
The 23-ft. (7 m) tower uses ion technology to extract pollutant particles and collects them in its core–cleaning 30,000 cu m of air per hour.
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The filtered air is then vented back into the environment through the sides of the tower, creating a fresh-air bubble meant to attract visitors.
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Once a week, a team opens the tower to collect the dust and pollutants, which are compressed to make baubles for the project’s Kickstarter backers.
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