03/06/2017 12:23:24 PMPosted March 6, 2017 – The roughly 45 college students hovered over laptops, zooming in on a map of the city. They were working on a project to help AIDS Foundation Houston. The areas shaded red represented “hot spots” – neighborhoods where residents are statistically more likely to be undiagnosed with HIV or AIDS based on demographic and socioeconomic factors.