The risk of a devastating space storm wreaking havoc like a "global Katrina" and costing the world trillions of pounds should be taken "seriously", claims Britain's top scientist. Professor Sir John Beddington, the Government's chief scientist, said that the Sun was waking up from a quiet period and was likely to throw a lot more "space weather" at the Earth. Also, the world was increasingly vulnerable to damage because of our dependence on satellites, communication networks and computer devices. If a solar storm hit the Earth, it could throw out navigation systems, crash stock markets, ground aircraft and cause power...