A robot can recreate the mechanism plants use to transport water to bend itself towards the sun and open its leaves like a real plant
Source:
https://www.newscientist.com/article/2236815-robot-with-origami-leaves-can-follow-the-sun-like-a-real-plant/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home