Researchers at USC were surprised recently to discover just how much the rising and setting of the sun drives life on Earth ... to the 24-hour day, known as the circadian cycle.

You may take sleep for granted, but research suggests many planets that could evolve life don't have a day and night cycle. It's hard to imagine, but there are organisms living in Earth's ...

What would happen if the Earth gradually stopped spinning? This fascinating video explores the potential effects on our planet’s climate, day-night cycle, weather patterns, and life itself.Imagine a ...

It explains that the Earth orbits the sun and rotates as it does so, causing the day and night cycle. As well as rotating, the Earth has a tilt in its axis that brings the northern and southern ...

You may take sleep for granted, but research suggests many planets that could evolve life don't have a day-night cycle. It's hard to imagine, but there are organisms living in Earth's lightless ...

Do aliens sleep? You may take sleep for granted, but research suggests many planets that could evolve life don’t have a day and night cycle. It’s hard to imagine, but there are organisms living in ...