Sensors on asthma inhalers produce real-time maps of ecological threats to assist clients, doctors and illness investigators in Louisville, Kentucky. Street understanding was likewise important in a historical medical advancement: John Snow’s mapping of cholera deaths in 19 th century London. In West Oakland, California, people challenge air contamination and increasing asthma rates by gathering traffic information. Regional regulations are altered and everybody breathes much easier. Can maps and apps fight globalized illness in a warming world? Stories of person science battling mosquito-borne illness with apps and crowd-sourced information in Barcelona, Houston and New Orleans. In Kenya, Medic Mobile establishes low-priced however clever software application to offer easy phones effective abilities to assist neighborhood health employees enhance maternal and kid health.