The human race is mere seconds from catastrophe, according to the ominously named "Doomsday Clock," as it ticks closer to midnight than ever before. The symbolic clock, set to its new time on January ...

Add Yahoo as a preferred source to see more of our stories on Google. Trapped ions already power quantum computers and the world's most precise clocks. Now, by merging those strengths, researchers are ...

Few concepts in physics are as familiar, yet as enigmatic, as time. In Einstein's theory of relativity, time is not absolute: its passage depends on motion and gravity. But when combined with quantum ...