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Are bridges near you safe? This MRI-like scan may prevent disaster

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Are bridges near you safe? This MRI-like scan may prevent disaster


Credit: Unsplash/CC0 Public Domain

Suyun Ham can’t take his eyes off a scanner. “Lower the sensors a little bit more,” Ham urges an assistant. Then a barrage of data floods in, filling computer screens for a diagnosis.

But Ham isn’t a medical doctor. Nor is his “patient” a living creature. An engineering professor from the University of Texas at Arlington, he is experimenting with a novel approach in bridge inspection.

Ham’s mobile-scanning system is part of efforts to make US infrastructure more heat-resilient. Unlike floods and tornados that can quickly destroy bridges, extreme heat is a silent killer that harms them over time, experts say.

“If temperatures are out of range, bridges can get damaged unexpectedly,” says Ham, who lives in the Dallas-Fort Worth area, where can exceed 100F (38C). “With our “MRI,” we can see what’s inside a bridge quickly.”

Bridge materials expand and contract in response to temperature fluctuations. While most are equipped with features to accommodate that movement, they were designed to withstand historically cooler temperatures, says Paul Chinowsky, a professor emeritus of civil engineering at the University of Colorado Boulder.

When temperatures hit a record high, bridges might behave in ways that engineers didn’t intend them to, he adds.Heat-swollen steel joints can impair the mobility of a swing bridge, making it unable to open or close—at least temporarily. Concrete also expands under heat. Once its expansion goes beyond a bridge’s original design limit, the concrete can crack, exposing it to moisture that can corrode internal metal components.

That’s an increasingly common scene around the world. In China, a broke in half because of brutal heat in 2022. That same year, London wrapped Hammersmith Bridge in giant pieces of foil to prevent it from overheating. And when the blistering sun baked Chicago’s DuSable drawbridge in 2018, its steel joints expanded and got stuck until firefighters hosed the bridge with cold water.

“Bridges are very susceptible,” Chinowsky says. “The hotter it gets compared to what typically it is, the more danger you have.”

‘A lot of headaches’

Hotter temperatures are baking US bridges at a time when their health is already deteriorating. The country has more than 600,000 bridges, almost half of which have exceeded their designed lifespan of 50 years, according to a 2025 report by the American Society of Civil Engineers.

With proper maintenance, many can last much longer, potentially exceeding 100 years, the industry group says. Still, about one in three bridges requires repair or replacement, according to an analysis published this year by the American Road and Transportation Builders Association.

Hussam Mahmoud, a professor at Vanderbilt University who has evaluated the structural integrity of about 90,000 steel-girder bridges across the US, found that many have aged prematurely, due in large part to the heat-accelerated malfunction of their expansion joints.

As the frequency and severity of heat waves increase with climate change, expansion joints, which connect two bridge spans, expand more often. That, coupled with the strain caused by debris or dirt accumulated in the joints over time, adds pressure to the structure, elevating the risk for a bridge to crack or buckle, Mahmoud says.

Although those defects don’t put a bridge in immediate danger of collapse, they need to be fixed to avoid further damage, which can be “a lot of headaches,” says Mahmoud.

With more than 4.9 billion trips taken across US bridges on any given day, bridge closures can take a toll on commerce and the economy, Mahmoud says. More damage also means higher maintenance costs. The US is already facing a $373 billion funding gap over the next 10 years to repair bridges properly, according to the American Society of Civil Engineers.Heat-induced damage can also cause bridges to malfunction at a time when the free movement of people is needed the most.

In June, a swing bridge in South Carolina got stuck for hours due to sweltering temperatures and was unable to open for ships to go through, delaying rescue efforts for a fatal boating accident.

Drive-by inspections

For Ham, better bridge monitoring is key. “Just like it is difficult to heal a human patient with stage-four cancer, it’d be too late to repair a bridge when there are a lot of defects,” he says.Ham, who spent a big chunk of his college time inspecting bridges, learned the limitations of the conventional method firsthand. He used to tap the bridge surface with a hammer and listen for hollow sounds that could indicate problems.

That hammer later evolved into more advanced devices, yet the time-consuming nature of manual inspection remains largely unchanged, Ham says. The conventional method also requires a bridge to shut down some of its lanes for inspection, a big ask for places such as Texas, which has 56,000-plus bridges.

While federal mandates typically require highway bridges to be inspected every two years, Ham and others at the University of Texas’s Smart Infrastructure and Testing Laboratory in Arlington want to help increase that frequency by introducing a new solution: a drive-through inspection.

Ham’s machine—a trailer loaded with dozens of electronics—is hauled by a pickup truck. On a sizzling afternoon in July, as the vehicle pulled the machine across a concrete bridge over a stream bed on the university campus, the tools generate mechanical waves that can propagate through concrete.

Sensors pick up the resulting bridge vibration signals, while a GPS device pins down where each signal comes from. Meanwhile, ground-penetrating radars emit pulses to create images of the structure under the bridge’s deck, and GoPros videotape the surface condition. The end goal, according to Ham, is to collect a wide range of data that enables engineers to identify cracks, voids and other anomalies.

The machine scanned the entire 5-feet-long bridge within seconds. By contrast, it would take hours for inspectors to complete the same job using the conventional method, according to Ham.

“There’s a lot of surface damage,” Ham says, pointing to a number of bright orange dots and stripes scattered across the dark blue background of one computer image generated from the onsite scanning. He also spots a cluster of tiny cracks, highlighted by a red rectangle.

Ham and his team then use to refine the analysis and filter out “noises”—irregular vibration signals caused by a car driving by during the inspection, for instance. The engineers report their findings to bridge overseers for safety assessment and future repair work.

“It is better for time and efficiency,” says Mark Burwell, a bridge inspection coordinator at the Texas Department of Transportation whose agency has deployed Ham’s technology to inspect dozens of bridges since 2019. As inspectors no longer have to work next to moving traffic on a bridge, the automated inspection also helps put humans out of harm’s way, he adds.

For now, Ham’s “portable MRI” is only available for bridge inspection in the Lone Star state. Ham aims to scale up its deployment. To make that happen, the engineers will have to first perfect the innovation.

There have been many learning moments, Ham recalls. Once, a rough ride knocked off sensors, cutting an inspection mission short. (The machine is now equipped with a lift that lowers and raises it to avoid obstacles on the road.) On another occasion, the software grappled with the complexity of decoding signals from a concrete bridge covered with asphalt patches.

To help the AI better interpret signals, Ham and his team have turned their laboratory into a manufacturing hub of artificial defects. There, engineers soak metal sticks in brine to emulate corrosion. They also drill holes in concrete slabs to mimic cracks. By applying sensors and radars to examine those artificial defects, the engineers can pair different signals with different types of damage.

Even so, the machine is unlikely to catch all the heat-induced problems, according to Ham. For instance, searing temperatures can stress a bridge, but the machine can’t detect it until physical damage occurs.

But data collected from damaged bridges may pave a way for future protection, Ham says. That’s because, by comparing the number of cracks in bridges built with different methods and materials, the technology plays a role in helping regulators determine how to design structures more suitable for a hotter world.

“We’re like a medical doctor,” Ham says. “We can help them make a decision.”

2025 Bloomberg News. Distributed by Tribune Content Agency, LLC.

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De-Gunk and Descale Your Keurig with These Cleaning Tips

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De-Gunk and Descale Your Keurig with These Cleaning Tips


It can be tricky to figure out how to clean your Keurig, but it’s important work. If your household is like mine, your pod coffee maker runs anywhere from three to seven times per day. All of that use can cause buildup and gunk, which can affect the taste of your coffee and the lifespan of your machine. But with proper maintenance and a dedicated routine, cleaning is a breeze. Here’s everything you need to know about light daily cleaning as well as deeper cleans.

Be sure to check out our related buying guides, including the Best Pod Coffee Makers, the Best Coffee Machines, the Best Coffee Subscriptions, and the Best Milk Frothers.

Daily Maintenance

To clean the housing of your Keurig coffee maker or other pod machine, just take a damp cloth and wipe down the outside. You can clean the K-Cup holder and needle by brushing or vacuuming away any loose debris like coffee grounds—be careful near the needle part since, obviously, it’s sharp.

Some machines come with a needle cleaning tool that you insert into the top and bottom of the needle, and a few people on various forums have used a paper clip instead. Some machines have removable pod holders that can be soaked in hot water. It’s always a good idea to refer to your specific model’s user guide, and you’ll probably want to unplug your machine beforehand.

To clean your drip tray and water reservoir, remove them and wash them by hand with hot, soapy water (though avoid using too much dish soap to prevent buildup). If your machine came with a carafe, wash it by hand or pop it in the dishwasher if it’s dishwasher-safe. Let them air dry or wipe them down with a lint-free towel after rinsing them off. You should be replacing the fresh water in your reservoir often, especially if it’s been sitting for a while. If your machine has a water filter in its reservoir, replace it every two to three months. Most machines with these types of filters have maintenance reminders—heed them!

For cleaning out the internal bits and pieces, you can use something like a Keurig Rinse Pod, which helps to flush out any excess oils or flavors that might be lingering. They are especially handy after brewing with flavored K-Cups like hot cocoa or some coffee varieties. You can also just run a hot water cycle every so often, which is a particularly good idea if you haven’t used your machine for a few days.

Keurig

Rinse Pods

These rinse pods help keep your Keurig clean and free from unwanted flavors.

Keurig

Water Filter Refill Cartridges

Keep your compatible Keurig water reservoir fresh with these filters, which should be replaced every two months or 60 water cycles.

Deeper Cleaning and Descaling

Some manufacturers recommend using filtered water or distilled water instead of tap water in your reservoirs, but I’ve always used tap water with the knowledge that I might have to clean my machine more frequently. You should deep-clean or descale your pod coffee maker every three to six months, or possibly more often if you notice hard water stains, calcium deposits, or mineral buildup, or your machine prompts you to deep-clean it.

You can do this a few ways. For the DIY method, fill your water tank with white vinegar and water (about half and half) and run large-capacity brew cycles until the reservoir is empty; Halfway through, consider letting the vinegar solution soak for a while, around 20 to 30 minutes. Follow up with a few rinsing cycles using clean water until the vinegar smell is gone. Alternatively, you can use a dedicated Keurig descaling solution according to the instructions on the bottle. That solution can be used on non-Keurig machines too. Make sure your machine is fully rinsed out before brewing your next cup of coffee.

It’s important to perform these deeper cleaning cycles on a regular basis to ensure your machine lasts as long as possible. And that your coffee tastes good, of course.

Keurig

Descaling Solution

This descaling solution can be used to remove mineral buildup every few months.

Keurig

Brewer Maintenance Kit

Get every piece you’ll need with this all-in-one maintenance kit.


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Europe’s fibre roll-out failing to deliver returns in key markets | Computer Weekly

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Europe’s fibre roll-out failing to deliver returns in key markets | Computer Weekly


The mass roll-out of fibre networks is seen as the key to the expansion of digital services across major economies, but research from Kearney is warning that a €174bn funding shortfall facing Europe’s telecoms sector is putting 2030 gigabit and 5G connectivity targets at risk, meaning around 45 million Europeans could remain without adequate high-speed connectivity by the end of the decade.

In the European telecom health index, Kearney surveyed 20,000 consumers across 21 European countries using consumer research and commercial performance data.

Topline findings showed customer behaviour was a major barrier to monetisation, with weaker markets seeing higher switching, lower satisfaction and weaker bundling. Looking at successful territories, the survey showed that the leading countries are achieving take-up of up to 84% while fibre investments struggle in slow-adopter markets.

Kearney’s research shows Europe’s healthiest telecom markets are concentrated in the north, with Norway (82), Sweden (81) and Switzerland (76) leading the rankings. These countries typically combined strong fibre adoption, higher customer satisfaction and stronger commercial outcomes.

Specifically, in slow-adopter markets – Italy, the Netherlands, Poland, Ireland and Denmark – returns on capital employed have dropped to 6%, with fibre take-up closer to 45%. By contrast, high-performing markets such as Sweden, Norway, France, Spain and Portugal are achieving fibre take-up of up to 84%, supporting significantly stronger returns of 11%.

Assessing the reasons for lack of uptake in the laggard countries, Kearney’s report found that demand-side behaviour was the main barrier to fibre monetisation. In the bottom-five markets, including the UK, customers were 7% more likely to switch providers, 10% more likely to demand faster speeds, and 6% more likely to demand better customer service compared with those in stronger markets.

By contrast, the top-five countries – Sweden, Norway, France, Spain and Portugal – record significantly higher sentiment. Customers are 11% more satisfied with their mobile provider, 13% more satisfied with fixed broadband, and 13% more likely to hold multiple mobile subscriptions with the same provider. Stronger customer relationships also deliver better financial outcomes. In top-performing markets, operators typically saw average revenue per user rise by up to 15%, while customer turnover drops by 10-15%.

The UK ranked 18th out of 20 European markets, despite fibre reaching nearly 80% of homes across the nation. The report stressed that the UK still struggles with slow adoption and weaker customer sentiment, reflected in lower bundling levels of just 28%. The UK joins Belgium and Italy in the lowest-performing group – markets where fibre availability was growing, but commercial performance is failing to keep pace.

Kearney partner Christophe Firth noted that while there was no shortage of fibre in the ground, the returns for providers weren’t adding up, and that the challenge now would be to convert homes passed into paying customers, improving service experiences and rethinking how operators go to market.

“In some countries, operators have passed 90% of homes but connected fewer than 40% – that’s a massive commercial gap that needs to be addressed,” he said.

“Instead of chasing roll-out targets, operators need to focus on actually getting more consumers to sign up to the service. That means improving how they cross-sell fixed and mobile, creating bundles that genuinely appeal to households, making digital sign-up simpler, and targeting the right customers with the right offers. The infrastructure is already there – now, it’s about turning it into a consistent revenue stream.”



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The Race to Build the DeepSeek of Europe Is On

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The Race to Build the DeepSeek of Europe Is On


Against that backdrop, Europe’s reliance on American-made AI begins to look more and more like a liability. In a worst case scenario, though experts consider the possibility remote, the US could choose to withhold access to AI services and crucial digital infrastructure. More plausibly, the Trump administration could use Europe’s dependence as leverage as the two sides continue to iron out a trade deal. “That dependency is a liability in any negotiation—and we are going to be negotiating increasingly with the US,” says Taddeo.

The European Commission, White House, and UK Department for Science, Innovation and Technology did not respond to requests for comment.

To hedge against those risks, European nations have attempted to bring the production of AI onshore, through funding programs, targeted deregulation, and partnerships with academic institutions. Some efforts have focused on building competitive large language models for native European languages, like Apertus and GPT-NL.

For as long as ChatGPT or Claude continues to outperform Europe-made chatbots, though, America’s lead in AI will only grow. “These domains are very often winner-takes-all. When you have a very good platform, everybody goes there,” says Nejdl. “Not being able to produce state-of-the-art technology in this field means you will not catch up. You will always just feed the bigger players with your input, so they will get even better and you will be more behind.”

Mind the Gap

It is unclear precisely how far the UK or EU intends to take the push for “digital sovereignty,” lobbyists claim. Does sovereignty require total self-sufficiency across the sprawling AI supply chain, or only an improved capability in a narrow set of disciplines? Does it demand the exclusion of US-based providers, or only the availability of domestic alternatives? “It’s quite vague,” says Boniface de Champris, senior policy manager at the Computer & Communications Industry Association, a membership organization for technology companies. “It seems to be more of a narrative at this stage.”

Neither is there broad agreement as to which policy levers to pull to create the conditions for Europe to become self-sufficient. Some European suppliers advocate for a strategy whereby European businesses would be required, or at least incentivized, to buy from homegrown AI firms—similar to China’s reported approach to its domestic processor market. Unlike grants and subsidies, such an approach would help to seed demand, argues Ying Cao, CTO at Magics Technologies, a Belgium-based outfit developing AI-specific processors for use in space. “That’s more important than simply access to capital,” says Cao. “The most important thing is that you can sell your products.” But those who advocate for open markets and deregulation claim that trying to cut out US-based AI companies risks putting domestic businesses at a disadvantage to global peers, left to choose whichever AI products suit them best. “From our perspective, sovereignty means having choice,” says de Champris.

But for all the disagreement over policy minutiae, there is a broad belief that bridging the performance gap to the American leaders remains eminently possible for even budget- and resource-constrained labs, as DeepSeek illustrated. “If I would already think we will not catch up, I would not [try],” says Nejdl. SOOFI, the open source model development project in which Nejdl is involved, intends to put out a competitive general purpose language model with roughly 100 billion parameters within the next year.

“Progress in this field will not to the larger part depend anymore on the biggest GPU clusters,” claims Nejdl. “We will be the European DeepSeek.”



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