The role of carbon...

...There is no scientific theory linking carbon dioxide to the “runaway” global warming that is the basis of the calamitous predictions. The contribution of the gas to the making of a comfortable planet by the greenhouse effect is well understood, modest and self-limiting. It is only turned into a terror by computer models. These are worthless; depending as they do on extensive guesswork about the ill-understood mechanisms and interactions involved in climate, and involving so many tunable parameters and feedback factors that they could produce any desired result by appropriate tweaking. A quarter of a century ago, before science came under firm bureaucratic control, such models would have been laughed out of court...more from John Brignell here...and see Quote of the day, below...