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Groundwater is heating up, threatening life below and above the surface

  • Written by Gabriel C Rau, Lecturer in Hydrogeology, School of Environmental and Life Sciences, University of Newcastle
Groundwater is heating up, threatening life below and above the surfaceGabriel C. Rau, CC BY-SA

Under your feet lies the world’s biggest reservoir. Groundwater makes up a whopping 97% of all usable freshwater. Where is it? In the voids between grains and cracks within rocks. We see it when it rises to the surface in springs, in caves, or when we pump it up for use.

While groundwater is often hidden, it underpins...

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