Independent: Britain can expect twice as many severe winters as usual over the coming decades, according to a study supporting the counterintuitive idea that global warming could lead to colder weather in some parts of the world. Climate scientists believe they have found evidence to suggest that the loss of floating Arctic sea ice in the Barents and Kara seas north of Scandinavia can affect the global circulation of air currents and lead to bitterly cold winds blowing for extended periods in winter over Central...