Ever since the first time I went to Toronto when I was just young and the place was covered with vast amounts of smog i've wondered why air filtering plants didn't exist.

I think that if they did exist they could filter out a bunch of the chemicals out of the air and perhaps refine them for use in industry.

On the TV series Seaquest DSV, I saw a air filtering plant of sorts and it seemed like a good idea.

They are by far no solution to the pollution problem but until the big oil companies run out of oil to sell we're going to have to come up with some alternative like this.