The Doomsday Clock is a metaphor for how close the world is to being inhabitable for humanity. Scientists just set the new ...

Researchers have identified a second dopamine-driven "clock" in the brain that works alongside the biological 24-hour cycle, ...

"The Republican Party will use its best efforts to eliminate Daylight Saving Time, which has a small but strong constituency, ...

This internal clock is influenced by external cues, like sunlight and temperature, which help determine whether one feels energized or exhausted at different times of the day. Circadian rhythms ...

to estimate divergence times, serving as evolutionary "clocks" that "tick" at different rates. Subsequent research has shown that Kimura's assumption of a strict molecular clock is too simplistic ...

The proposals come during a time when many are questioning the need for daylight saving time. Introduced by Senator Megan Hunt, the first bill aims for year-round daylight saving time, a change that ...