One look at the back of a Borax box makes Brett wonder: how can one product do so many different things? Can medicines serve more than one purpose too? How could one medicine treat multiple diseases in totally different parts of the body? And how do researchers figure this stuff out? Brett just doesn’t get it.

In our third episode, Susan E. Lacy, Ph.D., drug discovery scientist, helps Brett see how figuring out what’s behind a disease reveals new possibilities for treatment – and why discovering a new medication for one condition could offer hope for another.