The human body is a complex organism, made up of trillions of cells. But not all of them are human — about half of them are fungi, microbes and bacteria. Scientists are starting to understand how and why these communities — referred to as microbiomes — are crucial to the functioning of various body systems
In this episode of The Conversation Weekly, Salon speak to three experts who study the gut microbiome: a gastroenterologist, a neuroscientist and a biological engineer.
