Global warming and the natural cycle - There are not one but several natural cycles, of various natural and cyclic phenomena, from the earth's orbit of the sun through the gradual shift in the tilt of the earth and so the distribution of the sun's rays, through changes in the amount of carbon dioxide in the atmosphere, and the effect of a volcanic cycle and so on.
The impact of all of these has been calculated, temperatures added up or subtracted where appropriate, and a prediction made of what would be expected to happen naturally at this point in their combined graphs.
The result? There should be a DROP in average global temperature. Factor on the changes that humans have been causing since the Industrial Revolution and what do you predict? A RISE in average global temperatures. What are we getting? A RISE.
Factor in the continuation of those changes, and that they will be greater in the future, with a higher population, and given that some effects have a snowball effect, egging each other on and then being egged on by the effects of other factors and what do you predict? What do you think? Will it be good news or bad?