By William J. Broad from NYT Science https://ift.tt/VbP1hm4  via IFTTT  
Unraveling the mathematics behind wiggly worm knots  For millennia, humans have used knots for all kinds of reasons — to tie rope, braid hair or weave fabrics. But there are organisms that are better at tying knots and far superior — and faster — at untangling them. Tiny California blackworms…   Read more at nsf.gov  
