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Imagine yourself in a very hot day or after spending two hours working out at the gym. Would you get thirsty? It is just amazing to have an iced glass of water to refresh and hydrate our bodies or to take a long shower to relax after a working day. Water is so essential that no living being could survive without it. But have you ever thought that this resource could end or about the problems water scarcity could bring to the ecosystems and human lives as well? Could you imagine our blue planet without the blue part? Unfortunately, water shortage is a reality and we must understand what causes it and its consequences so that we could try to mitigate and avoid worse problems. The amount of freshwater available in our planet is limited, which puts a cap at how much we can use of it. However, such threshold is likely to be close due to over-exploitation and human’s current unsustainable water use practices. Global demands for water have been increasing since the 1950s, whereas the freshwat