To help clean up the air, Dutch designer Daan Roosegaarde created a 23-foot-tall air purifier called the Smog-Free Tower in 2015. Now, he's installing a tower at Jordana Park in Kraków ...

Wait what? The Smog Free Project by [Daan Roosegaarde] is another one of those head scratchers where somehow art, engineering, and a designer collide — to produce what looks like an actual ...