Iowa's McCaughey siblings just graduated from high school
                                
                                
                                    (Newser) -
                                    Alexis, Brandon, Joel, Kelsey, Kenny Jr., Natalie, and Nathan have graduated from high school,  NPR  reports. If their first names don't ring a bell, perhaps their last name will: They're the McCaughey kids, the world's first known set of surviving septuplets, and they accepted their diplomas from...