Valentine’s Day -- the holiday celebrating love and friendship – is this Thursday.  But, what is it that attracts people to one another?  Relationship experts often say it comes down to having good chemistry. 

This week we talk with author Leil Lowndes about her book on chemistry in relationships, as well as chemistry from entirely different perspectives. We're joined by Doctor Robert Lefkowitz, a professor at Duke University Medical Center and a winner of the 2012 Nobel Prize in Chemistry. We also visit Willner Chemists, a nutritional store that has been around for over 100 years.