The name of the Kenyan capital city comes from the Maasai word for “place of cool waters,” in reference to the city’s namesake creek. Nairobi is located on a gently sloping plain that is high enough not to have malaria-causing mosquitoes, and roughly midway between the seaport city of Mombasa and the vast Lake Victoria on the other side of Kenya. At the turn of the 20th century, British colonial authorities set up a railroad deport at the “place of cool waters,” which in 1905 became the capital of British East Africa.
But as the city has grown, its infrastructure failed to keep up, resulting in massive sewage releases into the Nairobi River, along with chemicals and trash that have choked its flow, killed wildlife and posing a health hazard to people living and working along its course. The crowded scene above is at Pumwani Road, to the east of Nairobi’s Central Business District.