Susan, I just can't resist...

If humans "tamper with Nature at our own risk" but at the same time you insinuate that humans are just another part of nature, nothing more, then how can we tamper with it?

By your definition, whatever we do is always "natural". Does a beaver tamper with nature when he builds a dam?
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- Tom S.

"Never trust and engineer who doesn't carry a pocketknife."