Climate change isn't just limited to above the planet's surface. The temperature is rising underground as well, putting densely built cities at risk, according to a study published in the journal Communications Engineering. The study found that urban areas struggle with subsurface heat islands, which are "an underground climate change responsible for environmental, public health, and transportation issues." The phenomenon leads to "ground deformations and displacements" that can impact the "operational performance of structures and infrastructures with time."
"All around you, you have heat sources," the study's author, Alessandro F. Rotta Loria, told The New York Times. "These are things that people don't see, so it's like they don't exist." The study analyzed Chicago, specifically finding that much of the heat came from underground infrastructure like basements, as well as pipes, train tunnels, parking garages, and electrical wires. The phenomenon was deemed "underground climate change."
The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.
Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
The other concern is the warming's impact on the underground ecosystem. Below the surface is "home to animals that ... such as worms, snails, insects, crustaceans and salamanders," that are used to "very static conditions," Grant Ferguson, an engineering geologist at the University of Saskatchewan, told Scientific American.
Per the study, underground climate change poses a "silent hazard" to cities, "but also an opportunity to reutilize or minimize waste heat in the ground."
-
Why these Iraqi elections are so importantThe Explainer The US and Israel are increasingly pressuring Baghdad to tackle Iran-backed militants, while weakened Iran sees Iraq as a vital remaining ally
-
Crossword: November 12, 2025The Week's daily crossword
-
Trespasses: a ‘devastating’ Irish love storyThe Week Recommends Lola Petticrew ‘steals the show’ in TV adaptation of Louise Kennedy’s novel
-
Why scientists are attempting nuclear fusionThe Explainer Harnessing the reaction that powers the stars could offer a potentially unlimited source of carbon-free energy, and the race is hotting up
-
Dinosaurs were thriving before asteroid, study findsSpeed Read The dinosaurs would not have gone extinct if not for the asteroid
-
Canyons under the Antarctic have deep impactsUnder the radar Submarine canyons could be affecting the climate more than previously thought
-
SpaceX breaks Starship losing streak in 10th testspeed read The Starship rocket's test flight was largely successful, deploying eight dummy satellites during its hour in space
-
NASA is moving away from tracking climate changeThe Explainer Climate missions could be going dark
-
Rabbits with 'horns' sighted across Coloradospeed read These creatures are infected with the 'mostly harmless' Shope papilloma virus
-
Lithium shows promise in Alzheimer's studySpeed Read Potential new treatments could use small amounts of the common metal
-
Scientists discover cause of massive sea star die-offSpeed Read A bacteria related to cholera has been found responsible for the deaths of more than 5 billion sea stars
