A vet sends an amusing letter to a cat named Loki, making vaccination sound appealing; Scientists successfully transfer a rhinoceros embryo, instilling hope for the endangered northern white rhinos' survival; a non-profit group, Gamers Outreach, brings joy to hospitalized children through a portable gaming kiosk; the mystery of Ancient Roman dodecahedrons continues to puzzle experts; and plans for what could be the tallest building in America, Legends Tower, are submitted in Oklahoma City.A Cat's Letter from the VetReviving the Northern White RhinoGaming for Hospitalized ChildrenMysterious Roman DodecahedronsOklahoma's Sky-High Ambitions