“Counties where residents’ tweets included words related to hostility, aggression, hate, and, fatigue … had significantly higher rates of death from atherosclerotic heart disease, including heart attacks and strokes. Conversely, where people’s tweets reflected more positive emotions and engagement, heart disease was less common.” The New Yorker’s Maria Konnikova on what your tweets say about you. You can test out your own tweets right here. (After seeing my results, I immediately ran out and bought a defibrillator.)

+ The ability to quickly collect and analyze individual and group data is interesting. But we’re also getting better at learning about you by looking at the brain itself. This is how your brain morphs when you learn physics.