World

Sensors can read your sweat and predict overheating. Here's why privacy advocates care

Published

2 years ago

August 24, 2024

Sensors can read your sweat and predict overheating. Here's why privacy advocates care

On a hot summer day in Oak Ridge, Tennessee, dozens of men removed pipes, asbestos and hazardous waste while working to decontaminate a nuclear facility and prepare it for demolition.

Dressed in head-to-toe coveralls and fitted with respirators, the crew members toiling in a building without power had no obvious respite from the heat. Instead, they wore armbands that recorded their heart rates, movements and exertion levels for signs of heat stress.

Stephanie Miller, a safety and health manager for a U.S. government contractor doing cleanup work at the Oak Ridge National Laboratory, watched a computer screen nearby. A color-coding system with little bubbles showing each worker’s physiological data alerted her if anyone was in danger of overheating.

“Heat is one of the greatest risks that we have in this work, even though we deal with high radiation, hazardous chemicals and heavy metals,” Miller said.

As the world experiences more record high temperatures, employers are exploring wearable technologies to keep workers safe. New devices collect biometric data to estimate core body temperature – an elevated one is a symptom of heat exhaustion – and prompt workers to take cool-down breaks.

The devices, which were originally developed for athletes, firefighters and military personnel, are getting adopted at a time when the Atlantic Council estimates heat-induced losses in labor productivity could cost the U.S. approximately $100 billion annually.

This article is part of AP’s Be Well coverage, focusing on wellness, fitness, diet and mental health. Read more Be Well.

But there are concerns about how the medical information collected on employees will be safeguarded. Some labor groups worry managers could use it to penalize people for taking needed breaks.

“Any time you put any device on a worker, they’re very concerned about tracking, privacy, and how are you going to use this against me,” said Travis Parsons, director of occupational safety and health at the Laborers’ Health and Safety Fund of North America. “There’s a lot of exciting stuff out there, but there’s no guardrails around it.”

VULNERABLE TO HEAT

At the Tennessee cleanup site, the workers wearing heat stress monitors made by Atlanta company SlateSafety are employed by United Cleanup Oak Ridge. The company is a contractor of the U.S. Department of Energy, which has rules to prevent on-the-job overheating.

But most U.S. workers lack protections from extreme heat because there are no federal regulations requiring them, and many vulnerable workers don’t speak up or seek medical attention. In July, the Biden administration proposed a rule to protect 36 million workers from heat-related illnesses.

From 1992 to 2022, 986 workers died from heat exposure in the U.S., according to the Environmental Protection Agency. Experts suspect the number is higher because a coroner might not list heat as the cause of death if a sweltering roofer takes a fatal fall.

Setting occupational safety standards can be tricky because individuals respond differently to heat. That’s where the makers of wearable devices hope to come in.

HOW WEARABLE HEAT TECH WORKS

Employers have observed workers for heat-related distress by checking their temperatures with thermometers, sometimes rectally. More recently, firefighters and military personnel swallowed thermometer capsules.

“That just was not going to work in our work environment,” Rob Somers, global environment, health and safety director at consumer product company Perrigo, said.

Instead, more than 100 employees at the company’s infant formula plants were outfitted with SlateSafety armbands. The devices estimate a wearer’s core body temperature, and a reading of 101.3 degrees triggers an alert.

Another SlateSafety customer is a Cardinal Glass factory in Wisconsin, where four masons maintain a furnace that reaches 3000 degrees Fahrenheit.

“They’re right up against the face of the wall. So it’s them and fire,” Jeff Bechel, the company’s safety manager, said.

Cardinal Glass paid $5,000 for five armbands, software and air-monitoring hardware. Bechel thinks the investment will pay off; an employee’s two heat-related emergency room visits cost the company $15,000.

Another wearable, made by Massachusetts company Epicore Biosystems, analyzes sweat to determine when workers are at risk of dehydration and overheating.

“Until a few years ago, you just sort of wiped (sweat) off with a towel,” CEO Rooz Ghaffari said. “Turns out there’s all this information packed away that we’ve been missing.”

Research has shown some devices successfully predict core body temperature in controlled environments, but their accuracy remains unproven in dynamic workplaces, according to experts. A 2022 research review said factors such as age, gender and ambient humidity make it challenging to reliably gauge body temperature with the technology.

The United Cleanup Oak Ridge workers swathed in protective gear can get sweaty even before they begin demolition. Managers see dozens of sensor alerts daily.

Laborer Xavier Allison, 33, was removing heavy pieces of ductwork during a recent heat wave when his device vibrated. Since he was working with radioactive materials and asbestos, he couldn’t walk outside to rest without going through a decontamination process, so he spent about 15 minutes in a nearby room which was just as hot.

“You just sit by yourself and do your best to cool off,” Allison said.

The armband notifies workers when they’ve cooled down enough to resume work.

“Ever since we implemented it, we have seen a significant decrease in the number of people who need to get medical attention,” Miller said.

COLLECTING PERSONAL DATA

United Cleanup Oak Ridge uses the sensor data and an annual medical exam to determine work assignments, Miller said. After noticing patterns, the company sent a few employees to see their personal physicians, who found heart issues the employees hadn’t known about, she said.

At Perrigo, managers analyze the data to find people with multiple alerts and speak to them to see if there’s “a reason why they’re not able to work in the environment,” Somers said. The information is organized by identification numbers, not names, when it goes into the company’s software system, he said.

Companies keeping years of medical data raises concerns about privacy and whether bosses may use the information to kick an employee off a health plan or fire them, said Adam Schwartz, privacy litigation director at the Electronic Frontier Foundation.

“The device could hurt, frankly, because you could raise your hand and say ‘I need a break,’ and the boss could say, ‘No, your heart rate is not elevated, go back to work,’” Schwartz said.

To minimize such risks, employers should allow workers to opt in or out of wearing monitoring devices, only process strictly necessary data and delete the information within 24 hours, he said.

Wearing such devices also may expose workers to unwanted marketing, Ikusei Misaka, a professor at Tokyo’s Musashino University, said.

A PARTIAL SOLUTION

The National Institute for Occupational Safety and Health advises employers to institute a plan to help workers adjust to hot conditions and to train them to recognize signs of heat-related illness and to administer first aid. Wearable devices can be part of efforts to reduce heat stress, but more work needs to be done to determine their accuracy, said Doug Trout, the agency’s medical officer.

The technology also needs to be paired with access to breaks, shade and cool water, since many workers, especially in agriculture, fear retaliation for pausing to cool off or hydrate.

“If they don’t have water to drink, and the time to do it, it doesn’t mean much,” Juanita Constible, senior advocate at the National Resources Defense Council, said. “It’s just something extra they have to carry when they’re in the hot fields.”

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Yuri Kageyama in Tokyo contributed to this report.

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World

How Sheila the three-wheeler dodged danger on a record 14,000-mile journey to tip of South Africa

Published

8 hours ago

April 21, 2026

Press Room

How Sheila the three-wheeler dodged danger on a record 14,000-mile journey to tip of South Africa

CAPE TOWN, South Africa (AP) — Englishman Ollie Jenks remembers when his friend first pitched the idea to him.

“It was so ridiculous I couldn’t say no,” Jenks said.

The proposal by Canadian buddy Seth Scott, a fellow lover of cars and crazy adventures, was for them to drive a decades-old British-made Reliant Robin car from London to the southern tip of Africa — a 14,000-mile (22,500-kilometer) journey through 22 countries — to set a record for the longest trip in a three-wheeled vehicle.

Reliant Robins have cultlike status in the U.K. as humble three-wheelers that, in Jenks’ words, were designed to go to the shops and back in 1970s Britain. They went out of production in the early 2000s but remain loved in British culture, especially after a Reliant appeared as the Trotter brothers’ trusty but battered yellow van in the hugely popular sitcom “Only Fools and Horses.”

Yet you couldn’t find a less suitable vehicle to take thousands of miles through tropical jungles, mountain ranges and deserts down the west side of Africa. And that’s precisely why Jenks went for the absurd plan.

Sheila the three-wheeler

Sheila, the silver three-wheeler — one of the last Reliant Robins to be built — was acquired specifically for the adventure. Jenks and Scott set off in October with a can of fuel and a few essential supplies strapped to Sheila’s small roof, and a large amount of blind hope that they would somehow make it to Cape Town, South Africa, near the bottom of the world.

“No power steering, no air con, and it doesn’t do well up hills or down them. It is the most unsuitable car for probably any journey,” Jenks said in an unkind assessment of Sheila’s abilities. “We made friends with the designer of this car, and he’s scared to take it any more than 20 miles.”

Jenks and Scott ignored all the advice and took Sheila on the epic journey over four-and-a-half months that cost in the region of $40,000 to $50,000, Jenks said. They had help from sponsors and crowd funding, and documented the journey on an Instagram page that pulled in nearly 100,000 followers under the title: “14,000 miles, 3 wheels, 0 common sense.”

Attempted coups and airstrikes

They arrived in Benin during an attempted coup. They skirted through northern Nigeria as the U.S. launched airstrikes on Islamic State targets. They were given a military escort for about 300 miles (480 kilometers) through a region of separatist violence in Cameroon.

“Imagine this car in a military convoy,” Jenks said.

And there were many brushes with traffic-related danger, including when an overtaking bus almost flattened Sheila against a cliff face in Congo.

True to form that Reliants are sometimes not so reliable, there were also countless breakdowns on the punishing roads.

Sheila needed her wheel springs replaced in the first two weeks. The gearbox broke in Ghana, leaving them with only fourth gear. In Cameroon, there were clutch and distributor problems and then the big one: the engine blew up.

Through all the technical problems, the kindness of strangers and the intrepidness of Jenks and Scott kept them going. One man got a new gearbox shipped to Ghana. Reliant enthusiasts in the U.K. helped find a new engine to send to Cameroon.

After one breakdown, people helped load Sheila onto a cattle truck so she could be taken to a garage. Mechanics across the continent screwed, hammered and welded Sheila to keep her together, sometimes shaking their heads at the madness of it all.

Where no Reliant Robin has gone before

But there were also majestic moments, the kind that Jenks and Scott had envisioned to make it all worth it.

Sheila cruised through stunning mountain ranges and vast deserts — where surely no Reliant Robin has gone before. She went on safari, driving alongside galloping giraffes, spotting endangered rhinos, and posing for a picture next to a giant elephant.

More than 120 days after setting off, she rattled into Cape Town last month on an engine that began badly overheating in the Namibian desert and had been touch and go for about 1,000 miles (1,600 kilometers).

“This is a great underdog story,” said Graeme Hurst, a South African car lover who followed them on Instagram and came to see Sheila. “I see the farcical kind of comical nature of it … but also the sheer admiration. I mean, they have utter tenacity.”

In South Africa, Sheila was put on temporary display in a showroom for high-end cars and was the center of attention ahead of the glittering Porsches and Mercedes, showing off her broken side window, her petrol-stained windshield, her bent tire rims, and her countless dents and scratches.

She will rest now and be given the thorough service she deserves, Jenks said. Eventually, she’ll be driven to Kenya, put on a ship to Turkey, then make one last trip back to the U.K. to find a home at the London Transport Museum.

Jenks said he felt triumphant after reaching Cape Town, but relieved to have survived and finally be out of the tiny two-seater.

“It was like driving a motorized coffin,” he said.

___

AP Africa news: https://apnews.com/hub/africa

World

Pope Leo urges Africans to stay and ‘serve your country’ instead of migrating as displacement climbs

Published

9 hours ago

April 21, 2026

Press Room

Pope Leo urges Africans to stay and ‘serve your country’ instead of migrating as displacement climbs

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Pope Leo XIV last Friday urged African youth to work toward improving their own countries rather than migrating elsewhere in search of better opportunities.

The leader of the Roman Catholic Church directed his remarks to university students at the Catholic University of Central Africa in Yaoundé, the capital of Cameroon, during an 11-day apostolic journey in Africa.

“In the face of the understandable tendency to migrate — which may lead one to believe that elsewhere a better future may be more easily found — I invite you, first and foremost, to respond with an ardent desire to serve your country and to apply the knowledge you are acquiring here to the benefit of your fellow citizens,” Leo said.

While displacement in Africa has steadily increased in recent years amid economic and political challenges, Leo said each country’s rising generations should be “committed to society,” reflect their nations’ needs and confront systemic issues at home.

BISHOP ROBERT BARRON: WHAT LEO’S CHOICE OF NAME TELLS US ABOUT THE NEW POPE

Pope Leo XIV speaks as he meets with the community of Bamenda at Saint Joseph’s Cathedral in Bamenda on the fourth day of an 11-day apostolic journey to Africa April 16, 2026. (Alberto Pizzoli/AFP via Getty Images)

“Africa, indeed, must be freed from the scourge of corruption. For young people, this awareness must take root from their years of formation,” he said.

“These are the witnesses of wisdom and justice, of which the African continent needs.”

He added that through education and spiritual formation, “you learn to become builders of the future of your respective countries and of a world that is more just and humane.”

POPE LEO SAYS HE’S UNAFRAID OF THE TRUMP ADMIN AFTER PRESIDENT CALLS HIM ‘TERRIBLE’ ON FOREIGN POLICY

Pope Leo XIV delivers a speech during his visit to Central African Catholic University as part of his Africa tour April 17, 2026, in Yaoundé, Cameroon. (Ahmet Emin Donmez/Anadolu)

According to the World Migration Report, most of Africa’s displacement occurs internally within the continent, with 21 million Africans recorded as living in another African country in 2020.

Overseas African migration has also steadily increased, with figures more than doubling between 1990 and 2020.

In 2020, roughly 11 million Africans reportedly migrated to Europe, 5 million to Asia and 3 million to Northern America.

MORNING GLORY: LEO’S LAUNCH

Pope Leo XIV visits Central African Catholic University as part of his Africa tour April 17, 2026, in Yaoundé, Cameroon. (Ahmet Emin Donmez/Anadolu)

The causes of displacement are largely attributed to political conflict, corruption, violence and economic hardship, including widespread poverty.

These factors are particularly pronounced in countries such as Somalia, one of Africa’s largest sources of refugees; Nigeria, which is riddled with natural disasters and economic pressures; and Sudan’s surrounding areas, where civil war, political instability and food insecurity have driven large-scale displacement.

The Pope’s remarks come just days after President Donald Trump criticized Leo on Truth Social, calling him “weak on crime, and terrible for foreign policy.”

The backlash followed the pontiff’s criticism of the U.S.-Israeli war in Iran and his appeal for a return to peace.

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Tensions between the two boiled over several days before the Pope said last Saturday that it was “not in my interest at all” to debate the president.

Leo has insisted that his position is focused on bridging divides among nations and promoting peace and reconciliation.

Bonny Chu is a Digital Production Assistant at Fox News Digital.