Today’s Video of the Day from NASA Science News describes how plants and trees cool the air from “sweating.”
During transpiration, water and nutrients are pulled up from the roots of a plant and then carried to the stem and leaves.
Some of this water escapes through pores in the plant’s leaves, which results in sweating.
Heat is removed from the air as the sweat evaporates, which creates a cooling effect. Therefore many house plants will absorb warm air and release oxygen and cool moisture into the air via the transpiration process. Plants act in a similar way to how humans sweat; w hen the air around people and plants heats up, they both release excess water into the air from skin or leaves to cool themselves and the atmosphere around them.
By Chrissy Sexton, Earth.com Staff Writer
Video Credit: NASA Science News