OpenAQ aggregates and shares air quality data from around the world in order to fight air inequality. How big of an issue is air pollution? The World Health Organization estimates that one out of every eight deaths on the planet is related to air pollution. That’s more than HIV/AIDS and Malaria combined. Most of these deaths occur in developing countries, creating what Christa Hasenkopf calls “Air Inequality.” Christa is an atmospheric scientist. In grad school, she focused on the atmosphere of a moon of Saturn called Titan. One day she was talking to a professor from a neighboring university. The professor was telling Christa about Mongolia while showing her pictures…