The UN estimates that globally over 2 billion people live in countries with high water stress. This could rise to more than 5 billion people by 2050. How much potable water is available and how can it be maintained?
Globally, 60 percent of people don't have enough clean water, and climate change is making the situation worse. Chilufya Chileshe from WaterAid explains why southern Africa is particularly vulnerable.
Pakistan could "run dry" by 2025 as its water shortage is reaching an alarming level. The authorities remain negligent about the crisis that's posing a serious threat to the country's stability, reports Shah Meer Baloch.
India is suffering from the worst water crisis in its history. But Rajender Singh has been working to restore supply to more than a thousand villages, and has rejuvenated 11 rivers using traditional techniques.
World Water Day is drawing attention to the growing threat of water scarcity. Some countries are making the most of every drop they use – but others are still squeamish about reusing wastewater.
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