The BABE project (short for Baby-Associated Built Environment) is investigating how a good bacteria that lives in the gut of babies spreads around by conducting a survey of man-made environments where babies are found. Babies who have this bacteria (called "bifidobacteria") in them enjoy a number of health-related benefits, and we are trying to figure out why some babies have the bacteria and some don't. We think the answer might lie in how babies transfer microbes to each other. We are taking samples at locations like daycares, baby changing tables, and other places where babies go to look for this good microbe. Think of it like going on a microbial "safari!"