Howard Stone is a Professor of Engineering at Princeton. His research explores how fluid dynamics can help to understand diverse systems, from bacterial biofilms to the earth’s interior.  In this episode, Howard explains how a lot of important, low-hanging fruit are at the interface between disciplines. Howard is most creative when he debates phenomena at a blackboard together with a collaborator. A trick he likes to use is to identify related problems in isolated disciplines, helping him to unravel underlying mechanisms. And he warns against being too conservative – taking things in textbooks for granted. 

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