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The world doesn't need to go thirsty

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(Read caption) Women in Hyderabad, Pakistan, displaced after recent downpours during the monsoon season, get drinking water at a water tanker at a relief camp. A new report suggests that there is enough water for human needs in the coming decades, if it is managed wisely.

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The next century is going to leave the planet parched for drinking water. But a new study asserts that the problem isn't water scarcity – it's water efficiency.

The global population is expected to reach 9 billion by 2050, and the UN Food and Agriculture Organization says we need to increase food and water production by 70 percent if we are to feed that population.

Can we do that with the resources we have?

Yes, says the study, published by the Consultative Group on International Agricultural Research (CGIAR). Researchers looked at 10 major river basins to assess how the world uses its water and concluded that with refined practices, we can sustainably exceed the needs of current and future generations.

It is not how much water we have, but how we use that water that will drive resource politics. According to CGIAR, most of the world considers different uses of water in isolation from one another. A more integrated approach to the water needs of food, industry, and energy would lead to more efficient allocation.

Dr. Simon Cook of the International Center for Tropical Agriculture described the current practice as one of “complete fragmentation of how river basins are managed amongst different actors and even countries where the water needs of different sectors – agriculture, industry, environment, and mining – are considered separately rather than as interrelated and interdependent.”

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