We have trillions of body clocks — a central one in the brain and others in each cell of our body. Here's how they work with light to control our health. When you purchase through links on our site, ...

Researchers have shown how ultrastable optical signals from optical clocks can be transmitted across tens of kilometers of deployed multicore fiber carrying telecommunications data. Nazanin Hoghooghi, ...

Pulsars are some of the most reliable metronomes in the universe, and scientists are now using their flickering radio beams ...

A new study shows that the timing of the different clocks in our body depends on multiple stimuli. This was investigated in the liver- and muscle clock of rats, where only a combination of eating and ...

A night-shift worker finishes at dawn. Their phone says Tuesday, but their body feels like it's Monday. The body's internal ...