If your energy bill jumped this summer and your sunniest rooms still feel like ovens, you are not imagining things. You are also not alone. And that is exactly why a simple product called static-cling ...

sounds like sheer magic: Huge sheets of “thermally-bonded polypropylene filaments” hang from the ceiling at an old Austrian salt factory; and, as people walk between them, their own static charge ...

Woo-hoo! Fancy design talk! Magical as the installation might be in person, the mystery behind it is actually commonplace: The normal word for “thermally-bonded polypropylene filaments” is ...