"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A Cartier Ballon Bleu started it all. Trang Trinh got it for her 20th birthday, and five years later ...

If you have ever sat in a quiet room with a wall clock nearby, you have probably noticed the steady tick-tock rhythm. It is such a common sound that most people barely notice it, yet the reason behind ...