There is a reason most of us do not fear dying from a paper cut, strep throat, or tuberculosis. The answer is antibiotics. These did not always exist and we are past the dark ages of bacterial sepsis and maybe heading back into those days. In this episode, learn what molds, MRSA, peptidoglycan, and penicillin all have in common. More appropriately, learn "who" is the connection point between all of these in this episode of When Science Makes History.

Photo Credit: Center for Disease Control (CDC).