PhD candidate and Tata Center for Technology Fellow David Hagan, and his advisor Professor Jesse Kroll, are working together to track pollution in Delhi, India — one of the cities with the worst air conditions in the world. Kroll and Hagan are creating an inexpensive sensor that will record atmospheric chemistry and provide a positive user experience. Hagan envisions the data to be helpful in a variety of forms from HVAC system sensors to use in in-home monitoring systems. Read more on MIT News.