From 2010: Rob Sachs takes a different approach to teaching you something you don’t already know or understand. On his National Public Radio podcast, “What Would Rob Do?” — now in its fifth year — Sachs tackles the big challenges of the day, such as “What would you do if you clogged the toilet at a friend’s house?” Oh, the horrors of that one. Or consider an example from his show, in which he researched how to successfully eat hot peppers.