Southwest Research Institute has created a comprehensive data analysis tool to help metropolitan areas curb urban heat islands (UHIs) and pursue mitigation methods for especially vulnerable populations. This project was a collaboration with the City of San Antonio. Southwest Research Institute has created a comprehensive data analysis tool to help metropolitan areas curb urban heat islands (UHIs) and pursue mitigation methods for especially vulnerable populations. This project was a collaboration with the City of San Antonio. Environment Phys.org – latest science and technology news stories