Associated Press: Ships in the south Pacific Ocean have been alerted that hundreds of icebergs believed to have split off Antarctic ice shelves are drifting north toward New Zealand, officials said Tuesday. The nearest one, measuring about 30 yards (meters) tall, was 160 miles (260 kilometers) southeast of New Zealand’s Stewart Island and was part of a “flotilla” of icebergs that can be seen on satellite images, Australian glaciologist Neal Young said. The alert comes three years after cold …