In a live TV program, John Macharia tells the Kenyan president that traffic police in Nairobi expect bribes from matatu drivers. iNooroTV/Screenshot by NPR hide caption

Magic bus team posing on a Matatu van in Nairobi, Kenya. Courtesy of Magic Bus hide caption

Amine Bendriouich, a fashion designer in Casablanca, Morocco. Deborah Benzaquen hide caption

Traffic stands still in Nairobi. People in Kenya's capital don't like getting into cabs driven by strangers. They prefer to call drivers they know or who their friends recommend. Goran Tomasevic/Reuters/Landov hide caption

The Apple logo. Justin Sullivan/Getty Images hide caption

The Mathare Valley, shown here in an aerial map, is one of the largest and oldest slums in Nairobi, Kenya. Residents are using hand-held GPS devices to map the area, which comprises 13 villages and is home to nearly 200,000 people. Courtesy of Muungano Support Trust and Jason Corburn, UC Berkeley hide caption