Although it is not always considered a hot topic, water scarcity is a very real problem. The UN and the World Bank predict that drought could put 700 million people at the risk of displacement by 2030.
Water shortages result partly from a demand that outweighs the supply, and
when it comes to a natural resource as vital as water, shortages can result in heated and even violent conflict.
Check out this gallery to learn all about the rising risk of water wars.