As concerns over water scarcity grow, research published in Nature recently documents how freshwater availability has changed over the years, helping water specialists and managers pinpoint how this essential resource’s flows have been changing. Xander Huggins, a PhD candidate at the University of Victoria and Global Institute for Water Security at the University of Saskatchewan, and his fellow researchers decided to explore what exactly these changes would mean for life here on Earth. The team examined 1,024 basins across the world to understand how water availability couples with social processes to create vulnerability in communities. The main factor they studied were freshwater stress, which is the amount of H2O that naturally leaves the watershed or basin per year; the higher the stress, the less water there is available for ecosystems and for people’s demands, according to Huggins. Following this, he and his colleagues coupled the findings with data on how freshwater storage in underground aquifers and glaciers, for example, is changing. - Popular Science / Nature
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