There is plenty of evidence about how important sunlight is to our circadian rhythm, and how the blue light we stare at on computers and televisions interrupts it. Many people have poor sleep, due to ...

As anticipation builds for the longer days that follow this weekend's switch to daylight savings time, the moment seemed ...

Nuclear clocks are a technology researchers have been working toward for decades. New research in theoretical physics brings them closer to reality.

"Biological aging tests," also called aging clocks, can predict your risk of age-related disease, disability, early mortality and more — but are they ready for prime time? When you purchase through ...