How enduring is humanity’s damage to the Earth?
14 05 2008For possible answers, check out this graphic. You may not agree with all of the estimates (I don’t), but it’s both humbling and strangely encouraging to think about the limits to even our most potent destructive tendencies. Mr. James Lovelock would be proud.
(Thanks to Wilderdom.com)

Colleen,
There would be some traces - mankind has for several millenia taken pains to archive and preserve information / other items - we would be recognizable, I think, in the archeological record…
Wayne