If you want to talk about fragrance, you have to talk to Luca Turin. So we did.  The biophysicist and writer wrote the book on fragrance—three actually—which were some of the first published guides to contemporary fragrance starting in the 1990s. He's since studied the science of how scent works with our sense of smell, still a grand mystery. Also a mystery: why masculine scents are so...the way that they are, what marks the difference between a scent and a fragrance, what makes some fragrances really bad and really good, and how far off we are to creating an electric nose.  [Fragrances mentioned: Estee Lauder Beyond Paradise for Men, Fresh Cannabis Santal]