From December 23rd to January 1st, we will be showcasing our most notable conversations of the year. Today’s show: Breathing is a fundamental part of life – and yet we’re still figuring out how to get better at it. Science writer James Nestor joins host Krys Boyd to talk about how clues can be found not in research labs, but in choir rooms, smoggy streets and even centuries-old breathing practices. His new book is called “Breath: The New Science of a Lost Art.”