Title: Super clocks: More accurate than time itself

Url: http://www.newscientist.com/article/mg20126941.900-super-clocks-more-accurate-than-time-itself.html?full=true

Body: "For those physicists and philosophers puzzled by nature's fourth dimension, Patrick Gill has a wry response. 'Time,' he says, 'is what you measure in seconds.'"