Quantum clocks, in particular, have pushed the boundaries by using the strange rules of quantum mechanics to achieve mind-boggling accuracy. However, there has always been a catch: the more precise ...

Biological clocks are why cats are most active at dawn and dusk, and why flowers bloom at certain times of day. Circadian rhythms are also essential to health and well-being.

In the first installment of her new column, Deesha Thosar examines the pitch clock, which most agree has made MLB better than it has been in decades. Some pitchers, however, are struggling to adapt.

The confusion caused to passersby, as each side of the tower displays a different time, has renewed criticism of the decision to dismantle the eight-decade-old clock tower in 2022.

We live by the clock, yet our bodies follow the sun. Our internal rhythms – those cycles that control our sleep and wake times – depend on the natural pattern of daylight and darkness. Our ...

Chicago engineer Jose Cardona says the idea for a clock wasn’t his alone, he was just the first to build one. Four years later, they can’t make them fast enough.

Doctors say the bigger problem is the clock change in the spring — going from standard time to daylight saving time. On March 9, 2025, clocks will “spring forward” an hour, ending the ...