While you pore over fine lines and dark spots that appear on your skin as you age, there is another indicator of how fast ...

As sunlight filters through your window each morning, a quiet, powerful rhythm pulses inside your body. This inner clock tells you when to sleep, eat, and wake. It keeps pace with the 24-hour cycle of ...

Time stops for no man or woman, but you can stay healthier longer.

In cold-blooded vertebrates, deep-brain photoreceptors allow for photoentrainment, the process by which the eyes facilitate setting of the circadian clock. Mammals do not have these receptors; instead ...

The news that autism and schizophrenia may be related to paternal age has brought mixed feeling to the legions of women who have long been warned about the dangers of trying to have children too late.

Our perception of time varies greatly depending on our age, mood, stress level and psychological health and stability. Psychological disorders, such as Parkinson's disease, attention deficit ...