
(Wikimedia Commons)
Fascinating research from Ohio State University:
https://news.osu.edu/news/2016/06/20/waterfold/
P.S.: Notice the names of the researchers. Are Americans going into science and engineering any more? (Anecdotal evidence: My nephew completed a Ph.D. in engineering at a top-three engineering school a number of years ago. Out of, I believe, fifteen in his entering class, he was the only gringo who finished his doctorate. The rest were either Chinese or South Asian.)
Posted from Lindisfarne, Northumbria, England