An unknown number of people have died after a powerful tornado ripped through a small town in Iowa. Dramatic pictures showed the destruction left behind in Greenfield, with police confirming there had been fatalities and at least a dozen injuries, without being able to provide specific figures. The devastation came as multiple tornadoes rolled through the US Midwest. At least three 250-foot-high wind turbines were toppled by an apparent tornado in southwest Iowa. One turbine was in flames, with... Read this story