NIST researcher Gary Zabow had never planned to involve treats in his lab. He'd even tried covering tiny attractive dabs in solidified lumps of sugar—basically, hard treats—and sending these sweet bundles to partners in a biomedical lab if all else failed.The sugar breaks up effectively in water, liberating the attractive dabs for their examinations without abandoning any unsafe plastics or synthetics. By some coincidence, Zabow had left one of these sugar pieces, implanted with varieties of micromagnetic dabs, in a container, and it did what sugar does with time and intensity—iit softened, covering the lower part of the recepticle in