I'd say Man has a pretty insignificant affect in the grand scheme of things e.g. ask a Dinosaur what he thinks about climate change.
You reckon? They're breeding ever further north, some species are flourishing and others are suffering.
Telegraph link, but still an example of how dinosaurs are adapting: http://www.telegraph.co.uk/earth/environment/climatechange/10044960/British-birds-benefit-from-climate-change.html