The mouth is the window into human health and through Penn Dental Medicine’s upcoming MOOC (massive open online course), Introduction to Dental Medicine, participants will be able to understand more fully the ways in which the oral cavity functions and what affect that has on the rest of the body. The course is scheduled to run May 2 – June 26 through Penn’s Online Learning Initiative and its partner, Coursera. The widely popular course debuted last June, attracting 8,656 enrollments and 5,742 active learners worldwide and putting it among the top performers among Penn’s Coursera courses for engaging active learners.