Hundreds of millions of people could be living in areas where poor-quality groundwater threatens their health by the year 2100 as a result of rising temperatures. “This means that the water there cannot be drunk directly without hesitation, but must be boiled,” explains Susanne Benz from the Institute of Photogrammetry and Remote Sensing at Germany’s Karlsruhe Institute of Technology (KIT) in a press release. “Depending on the climate scenario, up to several hundred million people will be affected by 2100.” The temperature of the groundwater plays a decisive role in water quality and researche…