China Builds Worlds Biggest Air Purifier #1 Post by ccoggins » Tue, Jan 16, 2018, 6:11 AM UTC China Builds Worlds Biggest Air Purifierscmp.com
Re: China Builds Worlds Biggest Air Purifier #2 Post by lovemenot » Tue, Jan 16, 2018, 8:02 AM UTC This is pretty cool. I wonder if it could be used for power generation too.https://en.wikipedia.org/wiki/Solar_chimney