In fact, Bz is always fluttering back and forth between north and south as tangled knots of solar magnetic field drift by Earth. (spaceweatherarchive.com)
Instead, biologists may have to understand and control variations, or codes, of amino acid sequences in the protein that apparently guide them to engage in certain kinds of assemblies and prevent droplet assemblies from turning into tangled knots. (news.brown.edu)
Between the two books, Yang ties tangled knots of empathy where the heroes of one become the monsters of the other. (booklistonline.com)