John Brownstein, HMS associate professor of pediatrics at Boston Children’s Hospital, explains why your most important Facebook friend might be your doctor. Brownstein, a computational epidemiologist, also describes how our online behavior forms a “digital phenotype” that says more about our health than we might think.

And in this week’s abstract, HMS neurobiologists discover a new pathway in the brain that might help explain how antipsychotic drugs work. Read more about this finding from the lab of HMS neurobiologist Bernardo Sabatini.