From overhead, satellites are tracking and trying to prevent violence in Sudan with old-fashioned detective work

Two decades after militias slaughtered hundreds of thousands in Darfur, researchers are working to prevent a repeat of the violence. Nathaniel Raymond of Yale’s Humanitarian Research Lab is pairing photographic evidence with on-the-ground intelligence in a new partnership with the US State Department. Dina Temple-Raston of the podcast, “Click Here,” profiles the team’s work.