Humans and most other organisms have internal biological clocks that track the daily cycle of sunrise and sunset. These ...

Study in mice shows fetal circadian clocks form early and synchronize to the mother’s daily rhythms in late pregnancy via ...

The return to “standard time” is better for our health according to sleep scientists, but the time change can be disruptive, and our bodies must also adjust to more hours of darkness as we head ...

When does the circadian clock start ticking? A new study shows that fetal clocks synchronize to the mother in the womb via hormones, highlighting the importance of light and sleep during pregnancy.

Most of us are now back to standard time after winding back the clock this weekend. NPR's Allison Aubrey reports on one strategy to adjust our internal clocks to the dark days ahead. ALLISON AUBREY, ...

Scientists say the return to "standard time" is good for our health. But the time change can be disruptive and we must also adjust to more winter... To optimize health, sync your habits with your body ...