>Hi,
>
>> But, guess what, the earth cleans itself. Look at the pollution we had back just a few decades ago, like in Pittsburg, PA. You couldn't see the sky for all the brown smoke. Today, it's as clean as any other major city.
>
>So the Earth cleaned up Pittsburg?

Uh, that would be earthlings. But, had the earthlings only polluted in a single instance, Oith wudda did it.