The German city of Mannheim heats thousands of homes using ice-cold water. With the concept gaining ground around the world, DW reporter Tim Schauenberg took to the Rhine River to find out how it works.
Sat. Feb 8th, 2025
The German city of Mannheim heats thousands of homes using ice-cold water. With the concept gaining ground around the world, DW reporter Tim Schauenberg took to the Rhine River to find out how it works.