[paganel]

> That if you choose to ignore all the scientific and industrial advances and their effect on the environment.

We've had a negative effect on the environment even since we've decided to not be just herders anymore, many thousands of years ago. Just as a couple of examples, the Eastern parts of Syria and Southern Turkey (which are now in an almost desert-like condition) were a lot more greener, Sicily and present day northern Libya were Rome's breadbasket, while continental Europe was covered almost entirely by forests until the Middle Ages.