Rescue teams in South Korea are racing against time to find almost 300 people missing after a ferry sank off the country’s southern coast. The vessel was carrying a large group of high school students. A distress signal was sent from the ferry at 9:00 a.m. local time (0000 GMT), but the 6,825-ton vessel sank within two hours, after listing sharply and capsizing. It sank 20 kilometers (13 miles) off the southern island of Byungpoong. […]