This article analyzes the effects of the invasion of water hyacinth on fishing in Lake Victoria. The authors built two fairly standard Schaefer-type models that have one innovation: They allow the water hyacinth abundance to affect catchability.

Lake Turkana is a miraculous anomaly of life-giving water in a parched and unforgiving land. Formed millions of years ago in the tectonic upheavals that created East Africa

A third of the world's medicinal plants are facing extinction

More than 60 percent of the population of Nairobi lives in the numerous slums located around the city. Kibera slum is one of the 146 slums of the Kenyan capital and the second biggest slum in Africa (after Soweto in South Africa). Around one million people are currently living in Kibera and the population is increasing daily.

Addressing food insecurity in resource-poor settings is difficult in any context. However, in protracted refugee camp situations, where people are almost entirely dependant on humanitarian assistance, the challenges are even greater. The development and adaptation of multi-storey gardens has been tried in refugee camps in Kenya with impressive success.