CLIMaTE change sceptics are "playing a reckless game of roulette" with the future of their grandchildren, the Prince of Wales told a European Union conference on global warming yesterday.  Sharing a platform with the most senior officials in Brussels, the Prince attacked those who "corrode" the EU's environmental policies by denying "the vast body of scientific evidence" that climate change was caused by industrial activity.  "I would ask how these people are going to face their grandchildren and admit to them that they failed their future; that they ignored all the warning signs," he said. "Will such people be held accountable for the absolute refusal to countenance a precautionary approach, for this plays a most reckless game of roulette with the future inheritance of those who come after us?"  The Prince accused critics of using conspiracy theories to undermine the authority of experts and environmental campaigners, such as himself.  "Their suggestion that hundreds of scientists and those who accept their dispassionate evidence, including myself, are somehow unconsciously biased, creates the implication that many of us are, somehow, secretly conspiring to undermine and deliberately destroy the entire capitalist system," he said.  Earning the audience's applause, the Prince called on the EU to "make it cool to have less stuff" by winning over consumers to their policies.  "Can I ask if you will be courageous enough to seize the moment, set Europe on a co