A new 3-D model of a portable sundial found near Pompeii is helping researchers understand how to operate the "pork clock." ...

If you hear that question, the first place you probably look is at the watch on your wrist. Maybe you check your phone, look ...

These days, you probably aren’t going to consult a sundial. But the ancient time-telling devices are all over DC, and we were curious to learn more about them. Dedicated in 1905, the Washington ...