Port Vila, Vanuatu. The island nation of Vanuatu, located in the Pacific Ocean region, was shaken by a powerful earthquake on Saturday. Although the 6.4 magnitude earthquake was strongly felt, no reports of human or physical damage have been received so far.According to the U.S. Geological Survey, the epicenter of the earthquake was located approximately 50 kilometers (31 miles) west of the village of Port Olry on Espiritu Santo Island. The tremors reportedly occurred before 1:30 PM local time (02:30 GMT).The Pacific Tsunami Warning Center clarified that there is no tsunami threat following the earthquake. Since no unusual sea level...