Reuters: The planet could face a freeze worse than an Ice Age starting in as little as 10,000 years, giving future societies a headache the opposite of coping with global warming, scientists said on Wednesday. The researchers, based in Britain and Canada, said that now-vilified greenhouse gases might help in future to avert a chill that could smother much of Canada and the United States, Europe and Russia in permanent ice. They said the study, based on records of tiny marine fossils and …