Time of day may be important for how effective the COVID-19 vaccine is. A new study suggests middle of the day may be be best.

The AI chatbot ChatGPT can do many things, but its inability to solve Wordle explains parts of its programming.

Your experience of time is relative because it depends on motion – more specifically, your speed and acceleration.

In this podcast episode, an expert explains why it's so hard to adjust to daylight saving time and offers tips for springing forward.

Physics makes a lot of assumptions about time that may be getting in the way of understanding the fourth dimension.

Americans are divided on their preference for daylight saving time versus standard time. But research shows that our bodies fare better when aligned with the natural light of standard time.

Experts highlight the health and memory effects, offer suggestions for countering environmental disruptions.

Research shows that young adults and women are particularly susceptible to seasonal affective disorder.