Clock changes explained including why the clocks change on a weekend and when the clocks will go back in October.

CHICAGO -- At the dawn of the nuclear age, scientists created the Doomsday Clock as a symbolic representation of how close humanity is to destroying the world. On Tuesday, nearly eight decades later, ...

Every spring and fall, as we “spring forward” or “fall back,” many of us grumble about disrupted sleep and clock changes. But what if the twice-yearly rituals of setting our clock are only the tip of ...