This article concerns itself with a concept that is especially relevant in developing countries: sustainable livelihoods (SL). The sustainable livelihoods approach (SLA), or sustainable livelihoods framework, is a core principle for addressing poverty in the world. The SL concept was first clearly formulated in a 1987 report of the Brundtland Commission, and the idea (although without the name) was endorsed in the first UNDP Human Development Report in 1990. The concept then gained widespread attention in the last decade of the 20th century [1–3].