On Jan 9, 11:24*pm, Scott wrote:
My point was simply that the Earth has means to naturally "cleanse"
itself

What on earth does that mean, exactly. Sounds like you
are some for of a new-age Gaia devotee.

as it has done in the past without interference from humans and
will likely continue to do so, with or without human help. *

Perhaps you would like earth to "clense itself" of all this
nasty oxygen, and go back to the earth's original pristine
reducing atmosphere.

Do we know
that any particular heating or cooling is man-made versus the actions of
the Earth (or sun, or moon or God)? *For all we know, our supposed
man-made global warming may ward off an ice age for a few extra ceturies
or millenium...might be a GOOD thing...who knows?

Summary: Can't prove what'll happen in the future. So the best thing
is
to Carry On Regardless.

Not an impressive intellectual position.