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 ...

Kenya’s population has grown at breakneck speed. At the end of the 19th century, when British colonisers first imposed themselves, the populace may have been as small as a million or so.

Kenya is home to a diverse range of cities, with the top five being Nairobi, Mombasa, Nakuru, Eldoret and Kisumu. These cities in Kenya play a significant role in shaping the country’s cultural ...