This week’s cover story, “Magnetic Attraction,” tells the tale of Zen Magnets, a Denver company founded in 2009 by University of Colorado grad Shihan Qu. The company sells — you guessed it — magnets.

Getting your Trinity Audio player ready... The Consumer Product Safety Commission has ordered a Denver company that sells small, spherical magnet sets and neoballs to stop selling them and to recall ...

Is it possible to build a spherical magnet? If we could manage to do it, where would the north and south poles be, and what could such a magnet be used for? • The simple answer to this question is yes ...