The human body operates on a roughly 24-hour cycle known as the circadian rhythm. The cycle is primarily controlled by the suprachiasmatic nucleus — two clusters of neurons in the hypothalamus. This ...

A steering wheel that vibrates at highway speeds is most commonly caused by wheels that are out of balance, tyres with uneven wear, or front suspension components that have developed play. The ...

That low-mileage truck might be hiding a brutal working past.