Worldwide adaptations: Water resources

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    The severity of climate change impacts on global water resources will depend both on future greenhouse gas emissions and on how well communities around the world adapt to the changes. One-sixth of the world's population currently live in areas of water shortage, and this figure is likely to increase in future. If no emissions cuts are made and no adaptation measures are put in place, scientists estimate that climate change could lead to significantly reduced water availability for about a billion people by 2100.