If cleaning carbon dioxide from the atmosphere was easy, we'd already be doing it. But carbon capture has proven to be a tough technology to feasibly roll out on a grand scale, and that means all the things we do that produce carbon dioxide emissions - which seems to be just about everything these days - are still roughly as bad for the planet as they were several years ago. That's a problem in a warming world, and one that a team of researchers may have just found a solution for via an inexpensive polymeric material.