Almost all organisms are ruled by the day/night cycle of Earth. In humans, and many other mammals and birds, this is dominated by periods of wakefulness and sleep. But what about trees? They too work ...

You may think that trees and other plants are stationary and passive organisms that just stand around all day. So long as they get sufficient sun and water, everything is fine. But the reality is far ...

Most living organisms adapt their behavior to the rhythm of day and night. Now, using laser scanners, scientists are studying the day-night rhythm of trees. As it turns out, trees go to sleep too.

Sleeping under a tree may seem peaceful, but it can pose health risks at night. While trees release oxygen during the day, ...