There is a lot of debate regarding man made or natural in the climate change arena. The impression I have is that most scientists support the man made.

Those who support the natural causes do not seem to address the "what do we do about it" issue at all. A natural cycle which results in a rise in ocean levels, changes in rainfall/snowfall patters etc, still presents mankind with a big issue.

People impacted by climate change will be impacted regardless of the cause, animals and plants on the brink of extinction will be further stressed by climate change.

A natural cause does not make the problem go away, it may alter the focus of attempts to allevaite the consequences.