THOIRY, France (Reuters) — Poachers broke into a French zoo, shot dead a rare white rhinoceros and sawed off its horn in what is believed to be the first time in Europe that a rhino in captivity has been attacked and killed. The four-year-old male white rhino called Vince was found dead in his enclosure by his keeper at the Thoiry zoo and wildlife park about 50 km (30 miles) west of Paris on Tuesday […]