Subways and buildings emit heat directly into the sublayers of the ground, which can deform the ground and cause city structures and infrastructure to crack.
CHICAGO — On a recent tour underneath Chicago’s iconic skyline, Alessandro Rotta Loria, an assistant professor of civil and environmental engineering at Northwestern University, pointed out one of the sensors he and his team have installed across the city to track underground temperatures.
“There’s already a significant amount of heat beneath our feet,” Rotta Loria said. “And this heat has caused the ground to deform already.” Rotta Loria said the problem of rising heat underground is “the direct consequence of human presence on Earth, and a direct consequence of building our structures.” And with added heat trapped in the ground, he warned that public health, building structures and public transportation will suffer.
The Biden administration’s sweeping climate agenda has included many new federally funded programs introduced through the Federal Emergency Management Agency, the Department of Energy and the Department of Transportation that look to encourage municipalities to take on area-specific mitigation and resiliency projects.
Back in Rotta Loria’s lab, he transferred the data from the temperature sensors into a colored heat map, displaying his forecasts to show how quickly underground heat associated with buildings and parking garages has spread and increased over the last few decades.
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