Cool!

"Harvard researchers, captivated by a strange coiling behavior in the grasping tendrils of the cucumber plant, have characterized a new type of spring that is soft when pulled gently and stiff when pulled strongly."

Full article here

that is cool, I have to admit I too have stared at those amazing coils in awe of them. I have also had to rip them off nearby friends they were trying to choke out lol. Either way, nature rocks.