Latest period Stories
When Thomas Edison tested the first light bulb in 1879, he could never have imagined that his invention could one day contribute to a global obesity epidemic.
Disruptions to the circadian rhythm can affect the growth of blood vessels in the body, thus causing illnesses such as diabetes, obesity, and cancer.
A new Northwestern University study shows that the biological clock is not the only clock women trying to conceive should consider.
It's no secret that long-distance, west-to-east air travel – Seattle to Paris, for example – can raise havoc with a person's sleep and waking patterns, and that the effects are substantially less pronounced when traveling in the opposite direction.
Do animals that have evolved for millions of years underground, completely isolated from the day-night cycle, still "know" what time it is?
Yale University researchers have identified a key genetic gear that keeps the circadian clock of plants ticking, a finding that could have broad implications for global agriculture.
Circadian rhythms â€” the natural cycle that dictates our biological processes over a 24-hour day â€” does more than tell us when to sleep or wake.
Northwestern University scientists have discovered a new mechanism in the core gears of the circadian clock.
- An uxorious, effeminate, or spiritless man.
- A timorous, cowardly fellow.