[Gum Shoe]

Dude...don't say stuff like that. I'm waiting for some environmentalist to decide the local granite faces on our mountains in Utah are oxidizing and exhibiting unnatural color. Their answer would be spend millions, erect mountain scaffolds, and begin a rescue by scrubbinbg all the rock down to the original color.

[Right Wing Assault]

It won't happen. All you have to do it tell them all the friction from that scrubbing will cause global warming. They'll say, "Oh, yeah, you're right!"

[aliquis]

granite faces on our mountains in Utah are oxidizing

Nah, that's easy! Too much oxygen. If we drive more SUVs, there'll be less oxygen, and Earth will get bigger. Therefore, as the pressure drops, the mountains will get cleaner. Simple. Oh bummer, I forgot: all life dies at 15%...

;)

[Deguello]

"are oxidizing and exhibiting unnatural color"

Watching TLC a few nights ago, some guys were trying to find an old city high in the Andes from the description of "a big white rock". The natives kept saying, no white rock around here.

They finally found it, but the white rock had lichen growing all over it with no one around for 400 years to keep it cleaned off.