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China builds ‘world’s biggest air purifier’, and it seems to be working
- spiderfarmer 8y agoThe article insinuates that Roosegaarde's tower uses a lot of gray energy, while it uses the equivalent of one watercooker, and is powered by green energy.
- merricksb 8y agoDiscussed 6 months ago: https://news.ycombinator.com/item?id=16156942 https://news.ycombinator.com/item?id=16156942