Yes, and the current mass extinction, while human caused to a large extent, predates the industrial revolution by many millenia. All the megafauna of Europe and most of the Americas were hunted out of existence before there were even cities. If we're looking for positives, the total forestland in the world has been increasing over the last decade or so, although rain forest is still decreasing, if memory serves. Global warming is no doubt the issue of the day, but there's way more to conservation than greenhouse gasses. We could see the extinction in the wild of the black rhino before the end of the term of the next president of the US, if nothing is done to stop the trade in rhino horns. We just passed the hundredth anniversary of the extinction of the passenger pigeon, of which there were perhaps 5 billion in colonial times. Wanton disregard for wildlife breaks my heart, but it's easy to say that in the comfort of a first world existence.