How satellite images and AI could help fight spatial apartheid in South Africa

The older Sefala became, the more she peppered her father with questions about the visible racial segregation of their neighborhood: "Why is it like this?" Now, at 28, she is helping do something about it. Alongside computer scientists Nyalleng Moorosi and Timnit Gebru at the nonprofit Distributed AI Research Institute (DAIR), which Gebru set up in 2021, she is deploying computer vision tools and satellite images to analyze the impacts of racial segregation in housing, with the ultimate hope that their work will help to reverse it. "We still see previously marginalized communities' lives not improving," says Sefala. Though she was never alive during the apartheid regime, she has still been affected by its awful enduring legacy: "It's just very unequal, very frustrating." In South Africa, the government census categorizes both wealthier suburbs and townships, a creation of apartheid and typically populated by Black people, as "formal residential neighborhoods."