What does Evolution mean to you? When we talk about evolution, we think of the adaptation of a species to an external environment stresses. But what happens in the host/pathogen scenario, where two species are interacting with each other, and fighting for survival? How does this evolution actually work on the micro level, both on the sides of the host, as well as the pathogen as they wage war? Dr. Britt Koskella talks about the Red Queen hypothesis, specifically in the work that she is doing in phages and their interaction with their specific hosts to bring about co-evolutionary change…