As read in ScienceDaily :
Maple tree seeds (or samara fruit) and the spiraling pattern in which they glide to the ground have delighted children for ages and perplexed engineers for decades. Now aerospace engineering graduate students at the University of Maryland’s Clark School of Engineering have learned how to apply the seeds’ unique design to devices that can hover and perform surveillance in defense and emergency situations.
Read the full article here.
Photo by Evan Ulrich/A. James Clark School of Engineering, U-Md.