A powerful 7.8 magnitude earthquake rocked New Zealand early today, the US Geological Survey said, prompting a tsunami warning and knocking out power and phone services in many parts of the country. The shallow tremor hit some 90 kilometres north of the South Island city of Christchurch which was devastated five years ago by a 6.3 tremor which killed 185 people in one of New Zealand’s deadliest disasters. Today’s quake, […]