Trees show subtle movements of their branches at night
Trees are very busy at night - life science news

Trees appear to display cycles of subtle canopy movements that are different from species to species. They drop their branches up to 10 cm when they are in a resting state, and then start to pump up water in the active state. This causes tree branches and leaves to move, essentially invisible to the human eye, but researchers have managed to capture the movements by laser scanning. The results show that plants are not static, passive organisms, and monitoring their movements might be used as an indicator for their wellbeing in the future.

Read the full story: Aarhus University (in Danish)
Scientific publication: Journal of Plant Signaling and Behavior