They came, they saw, they concurred: CO2 is killing us all and Tony Abbott is its henchman. Laugh if you will, but that was the climateers' message as they tied up Melbourne for an afternoon of marching, chanting and moral preening. Quadrant joined the throng to learn what being so very wonderful must be like

Launch a massive campaign against CO2 and global warming, as John Kerry last week urged Indonesia to do, and you had better be in full command of the facts. As with previous and costly follies, that evidence is lacking