SEOUL, South Korea (AFP) — South Korean authorities took the unprecedented step of postponing nationwide college entrance exams after a rare 5.4-magnitude earthquake hit the southeast on Wednesday, sparking alarm in a country that seldom experiences significant tremors. The quake, the second most powerful recorded in South Korea, struck at a depth of nine kilometers (six miles) near the industrial city of Pohang around 2:30 pm (0530 GMT), the Korea Meteorological Administration said. Seven people […]