Add Yahoo as a preferred source to see more of our stories on Google. Is humanity doomed? The annual update of the Doomsday Clock was announced at 10 a.m. this morning in Washington, DC. The Bulletin ...

Long flights play tricks with your internal clock in ways that make you hazy, tired, and out of sync with the world. Your body believes it’s 3 AM when the sun is hot, or you’re awake at midnight, ...

As we head closer to winter, many US citizens are preparing for their days of sunlight to get a little bit shorter, due to Daylight Saving Time (DST). Daylight Saving Time is the practice of resetting ...

It was a quiet change, so quiet that you probably didn't notice it as you slumbered or partied through Saturday night. But it happened nevertheless, and it was a big change. As of 2 a.m. Sunday, most ...

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Get ready, folks. It’s that time of year again. It’s time to fiddle with the clocks again this weekend. Standard time is back for a while. Will this madness ever end? Experts claim we gain an hour in ...

A new book explores what makes our internal clocks tick and how we can reset them for the better. Science journalist Lynee Peeples spoke with some 240 scientists, chronobiologists, athletes, ...