ancestor of the borg

magnetic snakes?
ARGONNE, Illinois — In the basement of a nondescript building here at Argonne National Laboratory, nickel particles in a beaker are building themselves into magnetic snakes that may one day give clues about how life originally organized itself. These chains of metal particles look so much like real, living animals, it is hard not to think of them as alive. (See exclusive video below.) But they are actually bits of metal that came together under the influence of a specially tuned magnetic field. "It behaves like some live object," says physicist Alex Snezhko. "It moves. It crashes onto free-floating particles and absorbs them."