(Air Now/ Screenshot by NPR) All you need is a box fan, good air filters and some duct tape, and you're in business. NPR has previously posted a design and guide to building an air purifying cube ...

They’ll provide a much-needed cooling breeze during the summer, without the eyesore and unpleasant noise of a box fan. As you select the best ceiling fan for your outdoor space, it’s important ...

You can learn more about filter rating systems from LAist here. All you need is a box fan, good air filters and some duct tape, and you're in business. NPR has previously posted a design and guide ...

All you need is a box fan, good air filters and some duct tape, and you're in business. NPR has previously posted a design and guide to building an air purifying cube known as a Corsi-Rosenthal ...