Watch a Magnetic Material Skitter Around

We’re around magnets so much, it’s easy to forget they’re kind of magic. Not only do magnets make for fun toys, they can attract or repel objects from a distance through an invisible force, they can create electricity (and vice versa) and they can make cool new tools and materials possible.A team of mechanical engineers from MIT and the New Jersey Institute of Technology has gone down that last path, publishing in Nature today a new method of producing soft, programmable m