A new, powerful tremor has taken place in New Zealand just hours after a massive earthquake hit the same area, at one point triggering tsunami warnings in parts of the country. The BBC reports that the second quake happened northeast of Christchurch, on the South Island, at a depth of 10 kilometers. The tremor came at around 1:45 p.m. local time Monday, following an earlier, stronger quake at shortly after midnight, which hit...