This week "Sunday Morning," hosted by Jane Pauley, features Martha Teichner's cover story about our fascination with Tyrannosaurus Rex, king of the dinosaurs. Plus: Faith Salie checks out the gargoyles on Washington's National Cathedral; David Pogue studies the effect scary music has on horror movie audiences; Jamie Yuccas talks with the editor behind "The Beautiful Ones," the memoir that singer-songwriter Prince began writing shortly before his death; Ben Tracy finds out what one Japanese town is doing to combat a shrinking population; and Mo Rocca talks with historians about judging U.S. presidents, past and present.