“Nothing good happens past midnight,” your parents may have warned you, in attempting to rationalize your curfew as a teenager. While that (generous) time restriction might have seemed onerous in ...

Every day, as sunlight streams into your eyes, trillions of tiny clocks in your cells reset. The human body uses light to correctly time myriad processes, ensuring that liver enzymes are made on ...

Nearly all of us went through it as a kid: That phase where you're absolutely petrified of the dark. Sleeping with the lights on, filling the bed with stuffed animals to protect you, and never, EVER ...