We put carbon dioxide (and a lot more molecules) into the atmosphere. It is possible to get them back out, but then, what should be done with the collected pollution? One answer is to collect the carbon, compress and heat it properly, and create diamonds. Several smog eating devices have been created and proposed. This is the only one that makes jewelry. (Has anyone checked on how much energy, and therefore pollution, is required to run the pollution cleaner and diamond foundry?)
(Click on the photo for the link.)
“Now There’s A Smog-Sucking Tower That Turns Pollution Into Diamond Rings” – TakePart
Pretending Not To Panic 