Environmental degradation in arid and semi-arid regions often results from trade-offs between immediate and long-term needs. Ecological (and ultimately economic) benefits of restrained, sustainable resource use are well-understood by scientists, and are usually apparent to local farmers and...

Yemen is particularly vulnerable to climate change and variability impacts because of its water dependence and current high levels of water stress. This natural resource challenge is compounded by demographic pressure, weak governance and institutions, and by a deteriorating economic situation....