Theoretical physicists have spent decades wrestling with a disorienting possibility: that the flow of time is not woven into the basic laws of physics but instead emerges from gravity’s effect on heat ...

Maintenance of good sleep habits can defray the sometimes difficult adjustment to time changes.

Pushed down to a certain scale, the laws of physics seem to fall apart. Astrid Eichhorn, a leader in an area of study called asymptotic safety, thinks we just need to push a little further.

Do you feel the impact when you lose an hour of sleep to daylight saving time? Are you looking forward to having it stay lighter at night later? Trump mocks Biden and Obama for how they walk — and it ...

BETHESDA, MD – As space agencies prepare for human missions to the Moon and Mars, scientists need to understand how the absence of gravity affects living cells. Now, a team of researchers has built a ...

Daylight saving time will "spring forward" one hour on March 8. Most of Arizona does not participate in daylight saving time, beside Navajo Nation. A bill to end daylight saving time is working to get ...

Daylight saving time in 2026 in the U.S. is on Sunday, March 8, when clocks "spring forward" one hour. Federal law requires states to observe daylight saving time or stay on standard time year-round.

Daylight saving time in 2026 in the U.S. is on Sunday, March 8, when clocks "spring forward" one hour. Experts suggest adjusting your sleep schedule and getting morning sunlight to ease the transition ...

Corrections & clarifications: An earlier version of this story didn't explain the origins of daylight saving time, which was the result of a basic framework originally introduced in the Uniform Time ...

Daylight saving time in 2026 in the U.S. is on Sunday, March 8, when clocks "spring forward" one hour. Federal law requires states to observe daylight saving time or stay on standard time year-round.