Burning Fossil Fuels Has A Measurable Cooling Effect On The Climate

-sounds a bit counter to the prevailing wisdom -but it's been postulated for a good while -that more clouds means less solar radiation reached the earth therefore a cooling effect. Of course it doesn't seem to be enough to offset the increased insulating effect of clouds and carbon dioxide retaining the heat that does get through ... but it may mean that perhaps things could be worse. Remember that the effects of global warming are based on observation as well as theory; this isn't an "all clear" on global warming.