Actually have read a lot about climate change and the loss of megafauna and whether man or weather killed them off. Scientists still cannot AGREE 10,000 years after the fact.
Even though climate change was a natural cycle at that point it can be (and is) argued than man's actions during climate change may have greatly contributed to the end result in vegetation changes and loss of megafauna.
So even if this is a natural cycle it would seem history could suggest that man's actions during such times can magnify the affect.
