Contributors and fellows write stories discussing issues varying from AIDS activism to brain trauma in professional football players.

[6] The Editor in Chief is Dana March, an assistant professor of epidemiology at Columbia's Mailman School of Public Health.

"[8] One of the website's editors, social epidemiologist Abdul El-Sayed, received media attention from ABC News Radio when he wrote an open letter to NBA player LeBron James saying his promotion of Coca-Cola and McDonald's in commercials that were targeted largely toward his young fans was contributing to the problem of childhood obesity.

[9][10] El-Sayed calculated that James was responsible for selling more than a billion spoons of sugar and illustrated his point using a digitally altered image of the athlete as an obese man.

Through a crowd sourced selection of music, the 2x2 project examines the impact of both intentional and unintentional public health messaging found in our favourite pop songs.