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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

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

By Nikk Ogasa

- More than 2 years ago

The secret to efficiently heating some buildings might lurk beneath our feet, in the heat that humans have inadvertently stored underground.