Denver residents who live along Interstate 70 have been convinced for years they breathe more pollution than people living in other parts of the city. Now first-of-its-kind research from a University of Colorado Boulder doctoral student proves some neighborhoods are more polluted than others, and it illustrates how redlining and other racist housing practices pushed people of color into those neighborhoods. Alexander Bradley, a doctoral student studying atmospheric chemistry, used satellite imagery showing air pollution by census tract and old maps of redlined Denver neighborhoods to connect polluted air to the disproportionately impacted neighborhoods of Globeville, Elyria-Swansea and Commerce City. “Pollution is not equally distributed for people of different racial and ethnic groups in Denver,” Bradley said.