In one of the world’s most polluted cities, there’s a futuristic tower that sucks up smog, turns it into clean air, and filters out the smog particles so they can be turned into diamonds.

Not all plastic are evil, but we could all probably do with a whole lot less. Check out these great ideas — from a googly-eyed trash catcher to a styrofoam substitute made from mushrooms — and learn some small steps you can take right now.

Pollution is a blight, right? Not so fast, says architect Jorge Otero-Pailos, whose projects invite us to consider the important history lessons provided by layer upon layer of dirt.

One environmental advocate’s quest to detox the healthcare sector.

Today’s round-up of need-to-know stories from around the web includes Snapchat for smells, searingly creative people and a world-sized pollution blanket.