Clocks will roll back one hour on November 2, 2025. Here’s why daylight saving time exists, when it began, and why Congress ...

As anticipation builds for the longer days that follow this weekend's switch to daylight savings time, the moment seemed ...

Sign up for CNN’s Life, But Greener newsletter. Our limited newsletter series guides you on how to minimize your personal role in the climate crisis — and reduce ...

If your workday ends at 5 p.m., are you out the door right when the clock strikes five? A viral TikTok has reignited the debate about leaving-the-office etiquette. In the scripted clip, which has more ...

The Doomsday Clock, a symbolic measure of humanity's proximity to catastrophic destruction, has been set at 89 seconds to midnight—the closest it has ever been, symbolizing humanity's shortest margin ...

Stanford Medicine researchers have discovered there are long-term health hazards from changing the clocks twice a year—and better alternatives.