Severe storms and hail also hit Texas, Oklahoma, and Missouri
                                
                                
                                    (Newser) -
                                    Severe storms spawned twisters in America's heartland today, knocking out power, toppling tractor-trailers, and killing seven people in Arkansas, the AP reports. Up to 25 tornadoes also hit Missouri, Kansas, and Oklahoma, a state where hail smashed windshields and storms derailed railway cars. “It just seems like we’re...