I think people are slightly missing the point here. There have always been long, cyclical changes in climate, based on the milankovic cycles, based on the rise of different species (for example, the plants which evolved and made this an oygen rich atmosphere) and other variables acting over the long or very long term.
There have always been relatively quick fluctuations, for example changes induced by asteroid impact or volcanic activity.
These are things about which we can do nothing.
The present debate and the present 'Global Warming' concerns observed changes and predicted changes which are largely postulated to have been created by man. There are really three debates:
1. 'is this happening?'.
2. 'Did we cause it?'.
3. 'what if anything should we be doing?'
The problem here is that while many people are trying to conduct the third debate; many others are still at either No. 2. A few are still at No. 1.
There have always been relatively quick fluctuations, for example changes induced by asteroid impact or volcanic activity.
These are things about which we can do nothing.
The present debate and the present 'Global Warming' concerns observed changes and predicted changes which are largely postulated to have been created by man. There are really three debates:
1. 'is this happening?'.
2. 'Did we cause it?'.
3. 'what if anything should we be doing?'
The problem here is that while many people are trying to conduct the third debate; many others are still at either No. 2. A few are still at No. 1.