If you were to do a search for the Nairobi city slum of Mathare on Google Maps, you'd find little more than gray spaces between unmarked roads. Slums by nature are unplanned, primordial cities, the ...

Michael Marshall receives funding from CCAFS. Scientists at the World Agroforestry Centre in Nairobi, Kenya, recently pioneered a new approach which uses satellite images and maps to show patterns ...

After inheriting land from his father 20 years ago, George Kinyua did the same as thousands of other local farmers: he grew rice using water from canals. Back then, irrigation water was plenty in this ...