Pint-Sized Science, a podcast of Science in the News, features HBI co-director Venkatesh Murthy. In an interview with graduate students Ana-Andreea Stoica (Columbia Univ) and Anastasia Repouliou (Harvard Univ), Murthy discusses our sense of smell—why it matters, how it works, and what are some of the big questions in olfaction research today. Learn more about Science by the Pint here.