Current:Home > FinanceA "silent hazard" is sinking buildings in Chicago and other major cities – and it "will only get worse" -Core Financial Strategies
A "silent hazard" is sinking buildings in Chicago and other major cities – and it "will only get worse"
View
Date:2025-04-13 13:39:33
There's a "silent hazard" threatening the future of major cities. A new study found that the ground underneath major cities is heating up so much that it's becoming deformed – and that buildings, as they are, likely won't be able to handle it as it gets worse.
The study was conducted by researchers at Northwestern University, who used Chicago as a "living laboratory" to research the impact that underground temperature variations have on infrastructure.
"The ground is deforming as a result of temperature variations, and no existing civil structure or infrastructure is designed to withstand these variations," researcher and Northwestern professor Alessandro Rotta Loria said in a press release. "Although this phenomenon is not dangerous for people's safety necessarily, it will affect the normal day-to-day operations of foundation systems and civil infrastructure at large."
The problem is something called "underground climate change," otherwise known as "subsurface heat islands." It's a phenomenon that, along with threatening infrastructure, can lead to contaminated groundwater and impact health conditions such as asthma.
It's been minimally researched, so Rotta Loria and his team installed more than 150 temperature sensors above and below ground the Chicago Loop to learn more. Those sensors were put in basements, subway tunnels and buried under Grant Park along Lake Michigan, among other areas.
What they found is that underground temperatures in this loop are often 10 degrees Celsius warmer than those beneath Grant Park. Air temperatures vary even more – getting up to 25 degrees Celsius warmer compared to undisturbed ground temperatures.
Rotta Loria told CBS News that there is a "myriad of heat sources" underground that contribute to the warming, including basements, parking garages and subway tunnels.
"This is significant because it is renowned that materials such as soils, rocks and concrete deform when subjected to temperature variations," Rotta Loria said of his research, which was published July 11 in Communications Engineering, a Nature Portfolio journal.
And it isn't just happening in Chicago.
"We used Chicago as a living laboratory, but underground climate change is common to nearly all dense urban areas worldwide," Rotta Loria said in a Northwestern press release. "And all urban areas suffering from underground climate change are prone to have problems with infrastructure."
In Chicago, the ground is filled with clay, which Rotta Loria says can contract as temperatures increase, just as what happens with other types of soil. So as the temperatures increase, it's causing building foundations in the city to undergo "unwanted settlement, slowly but continuously."
"Underground climate change is a silent hazard," he said. "... In other words, you don't need to live in Venice to live in a city that is sinking – even if the causes for such phenomena are completely different."
View this post on InstagramA post shared by Protecting the Planet - CBS News (@cbsnewsplanet)
So why is all this happening?
"Global warming definitely plays a role in all of this," Rotta Loria said. "It is renowned that the temperature in the ground is linked to the temperature that we find at the surface of cities. So as the temperature above the ground is rising, also the temperature underground rises."
Parts of cities have been known to be up to 20 degrees Fahrenheit warmer than other spots just a few miles away because of the urban heat island effect. This effect is essentially a dome of heat that surrounds densely-populated cities that tend to have numerous buildings, scarce greenery, a lack of open space, and lots of emissions and dark concrete.
That makes the record heat that has been suffocating cities this summer substantially worse.
"So in the future, things will only get worse," Rotta Loria said.
- In:
- Chicago
- Climate Change
- Urban Heat Island
- Venice
Li Cohen is a social media producer and trending content writer for CBS News.
veryGood! (61371)
Related
- Gen. Mark Milley's security detail and security clearance revoked, Pentagon says
- Tom Brady? Jim Harbaugh? J.J. McCarthy? Who are the greatest Michigan quarterbacks ever?
- Robert De Niro Thought His Name Was Called at the Golden Globes When Robert Downey Jr. Won
- Margot Robbie, Taylor Swift and More Best Dressed Stars at the Golden Globes 2024
- Mets have visions of grandeur, and a dynasty, with Juan Soto as major catalyst
- You Missed This Mamma Mia Reunion & More Casts at the Golden Globes
- Rapper-turned-country singer Jelly Roll on his journey from jail to the biggest stages in the world
- China intelligence agency says it has detained individual accused of collecting secrets for Britain
- Gen. Mark Milley's security detail and security clearance revoked, Pentagon says
- New Jersey man pleads guilty to involuntary manslaughter in Pennsylvania cold case
Ranking
- Trump issues order to ban transgender troops from serving openly in the military
- Selena Gomez Declares Herself the Real Winner for Post Golden Globes PDA With Benny Blanco
- Bills vs. Dolphins Sunday Night Football: Odds, predictions, how to watch, playoff picture
- Rams' Puka Nacua caps sensational rookie season with pair of receiving records
- Grammy nominee Teddy Swims on love, growth and embracing change
- Dolphins vs. Chiefs playoff preview: Tyreek Hill makes anticipated return to Arrowhead Stadium
- Deputy defense secretary not told of Lloyd Austin hospitalization when she assumed his duties, officials confirm
- See Meryl Streep and Emily Blunt's Groundbreaking Devil Wears Prada Reunion at Golden Globes 2024
Recommendation
Bodycam footage shows high
Steelers vs. Bills playoff preview: Can Pittsburgh cool down red-hot Buffalo?
Steelers vs. Bills playoff preview: Can Pittsburgh cool down red-hot Buffalo?
Bills vs. Dolphins Sunday Night Football: Odds, predictions, how to watch, playoff picture
Will the 'Yellowstone' finale be the last episode? What we know about Season 6, spinoffs
Hundreds evacuate homes, 38 rescued from floods in southeast Australia after heavy storms
New video shows Republican congressman scolding Jan. 6 rioters through barricaded House Chamber
Lawrence stopped short of goal line as Jags eliminated from playoff race in 28-20 loss to Titans