Early mammalian ancestors were nocturnal, sleeping during the day while the dinosaurs dominated the land. However, some mammalian lineages, including human ancestors, independently transitioned to ...

Here's what to know about daylight saving time in 2026, including when it starts and ends. We will "spring forward" at 2 a.m. on Sunday, March 8. Americans should set their clocks forward one hour, to ...

The start of daylight saving time will make room for an extra hour of sunlight in the evenings as winter fades away. That ...

Daylight saving time starts in March each year and ends in November for states that observe the long-debated practice.

Add Yahoo as a preferred source to see more of our stories on Google. Most people in the United States will change their clocks this year because of Daylight Saving Time, a twice-a-year practice that ...

This video looks at how physicists study time travel as a scientific concept, exploring what theories like relativity say about time, causality, and what may or may not be possible. Donald Trump ...

The sun is setting later and the days are growing longer, a sign that that the clocks are about to spring forward an hour for the time change. Here's when and what to know about the start and end of ...

Alex Sundby is a senior editor at CBSNews.com. In addition to editing content, Alex also covers breaking news, writing about crime and severe weather as well as everything from multistate lottery ...

The 2026 Doomsday Clock is ticking closer to midnight, signaling humanity edging to the "closest it has ever been to catastrophe" according to the Atomic Scientists, and the human race destroying ...

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, the clock ...

The Lenovo Smart Clock used to let users quickly and silently toggle smart lights through its touchscreen interface. A few weeks back, that option seems to have gone away for everyone, replaced with ...