Underground heat pollution could be tapped to mitigate climate change
Heat leaked into the ground could be recycled to help warm buildings
![buildings of Lyon, France under a cloudy sky](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2022/07/071522_NO_urban-heat_feat.jpg?fit=1030%2C580&ssl=1)
Heat that has seeped into the ground beneath cities such as Lyon, France, could be recycled to warm homes and decrease reliance on fossil fuels.
JEFF PACHOUD/AFP/Getty Images