"circadian rhythm"

For now, a single satellite has been cleared for a test demonstration, but the company making it hopes to eventually launch 50,000 of them i...

The Royal Astronomical Society is urging governments to classify artificial light as pollution, citing growing risks to health, biodiversity...

Chronotype isn't just morning lark or night owl: your body clock runs on three dials, not one. Take this quick, science-based test to find y...

If you want to monitor your steps, calories burned, heart rate, sleep or stress, these fitness trackers have got you covered.

Around June 21’s solstice, regions north of the Arctic Circle experience the midnight sun: 24 hours of daylight, when the sun never sets and...