Yemen is one of the countries which are suffering from extreme water resources shortage. Yemen's agriculture and water resources sectors are in a crisis. The water availability is 150 m3/cap/a. This compares with an average of 1250 m3/cap/a for the Middle East and North Africa. All water resources are exploited beyond the level of recharge. The agriculture industry uses 93% of the potable water, and does not actively encourage sustainable water saving techniques. Qat (Catha edulis; recreational drug) cultivation uses 40% of the potable water. The water crisis could be mitigated by reducing...