Blinken's fifth Israel visit since Gaza war for diplomatic posture, rather than real mediation: experts

US Secretary of State Antony Blinken, after touring multiple Arab countries, is meeting Israeli leaders on Tuesday amid the enduring Gaza humanitarian disaster, Houthi attacks on Red Sea shipping and the escalation in hostilities at the Israel-Lebanon borders.

Speaking alongside Israeli President Isaac Herzog ahead of their meeting on Tuesday, Blinken said he would share what he had heard from regional countries during a day of meetings with Israel's government, including Prime Minister Benjamin Netanyahu, Reuters reported.

Blinken's agenda for his fifth Israel visit in three months includes discussing the next phase of Israel's military campaign and pressing on the protection of civilians, according to the US Department of State. 

But Chinese observers have low expectations that Blinken's trip can help alleviate the tension, as Israel shows no signs of softening its military assertiveness while the US eyes a diplomatic posture rather than real mediation. 

Since Friday, Blinken has visited countries including Turkey, Jordan, Qatar, the United Arab Emirates and Saudi Arabia. During the trip, he repeated multiple times the urgency of de-escalating the tension and discussed plans for the future governance of Gaza. 

On Monday, Blinken said Palestinians "must not be pressed to leave Gaza" and he criticized "irresponsible" comments by some Israel ministers calling for people's resettlement outside the enclave, media reported.

Yet US calls may only get symbolic resonation from Israel as the two close allies are diverging wider and wider on Gaza and Middle East issues, Zhu Yongbiao, executive director of the Research Center for the Belt and Road at Lanzhou University, told the Global Times on Tuesday. 

Israeli officials said the strikes in Gaza have entered a new phase of more targeted warfare, but there was no respite in the fighting on Monday, Reuters reported. "The fighting will continue through 2024," said Daniel Hagari, an Israeli military spokesperson, Reuters reported. 

Sun Degang, director of the Center for Middle Eastern Studies at Fudan University, told the Global Times that Israel aims to use its recent victories as leverage to address security concerns in the north and potentially extend its military achievements. 

The US has to deal with the presidential election this year and does not want the Middle East to take up too much of its attention from its competition with China and Russia, Sun said. 

Zhu pointed out that under the US' guideline of withdrawing from the Middle East, Blinken's trip aims to display the US' diplomatic presence and fulfillment of responsibilities as Israel's ally rather than play a constructive role in mediation. 

Therefore the US and Israel could showcase they have reached some consensus on non-significant topics, but that consensus can hardly have meaningful impact on the overall conflicts raging in the region, Zhu said. 

In the latest sign that the war may be spreading, Israel killed a top commander of Hamas' ally Hezbollah in south Lebanon on Monday. It came after an attack in Beirut last week which killed Hamas leader Saleh al-Arouri, for which Israel did not claim responsibility, according to CNN. 

Israeli Defense Minister Yoav Gallant warned on Monday that if Hezbollah is not deterred, Israel can "copy-paste" the Gaza war to Beirut. Gallant told media that his country was determined to end Hamas' rule of Gaza and deter other Iran-backed adversaries, Reuters reported. 

Hezbollah has vowed revenge, and analysts believe there will be more rocket launches, but a "large-scale retaliatory assault" is unlikely as it is beyond regional forces' capacity and will.

However, the possibility cannot be ruled out that there might be actions internationalizing the consequences of the Israeli-Palestinian conflict, such as Houthi attacks on vessels in the Red Sea, Zhu said. 

Hong Kong sprinter inspired by Su Bingtian to step on international stage

Cheng Cheung Hung, a sprinter from Hong Kong, China, says Asia's fastest man Su Bingtian is his hero, who encouraged him to work hard to step on the world stage one day.

"Su Bingtian created a new Asian record. His super performance definitely earned him the title of 'Su-per,' I had the pleasure of shaking his hand, which was a great inspiration," said Cheng after his competition in China's first Student (Youth) Games on Monday.

Su was the first Chinese to run 100 meters in under 10 seconds in 2015, followed by Xie Zhenye in 2018. With a personal best of 9.83 seconds in the 100 meters event, he is the fifth fastest man all-time in the category at the Olympics.

Four weeks ago, Su delivered a lecture in Hong Kong when Cheng not only shook hands with his idol, but also was inspired by Su's speech.

"It was truly an enlightening experience for me," recalled Cheng. "Su encouraged us to try and challenge ourselves, to break the limit. Combining talent and hard work, we can step on the world stage."

In the men's 4x100 meters relay final of the Open category, the Hong Kong team finished fifth in 40.45 seconds on Monday afternoon. The 19-year-old captain admitted they had room to improve.

"Maybe compared to other teams, our advantage is not so obvious, so we chose some special strategies. However, the process of competition is a lesson for us. We can learn from others," said Cheng.

Majored in Physical Therapy, Cheng has well balanced his academic studies and training at Hong Kong Metropolitan University.

"The main thing is to do a good job of time allocation for studying and training," he said.

"In the classroom and on the sports field, it's all about learning. We can see the performance of different regional teams through participating in competitions, which is also a learning process." 

Through studying physical therapy at university, Cheng gained a deeper understanding of human body structure and conducted scientific analysis of sprinting. He said he can be aware of the change in his physical state now and immediately adjust his training volume based on his knowledge and research.

"It would be a great honor to be involved in sports [after graduating from university], to pass on the experience I have learned now to the next generation, and I hope to help the development of sports in Hong Kong," Cheng said.  

Dubai maintains top global ranking for attracting Greenfield FDI projects in H1 2023

Dubai remains the top global destination for attracting Greenfield Foreign Direct Investment (FDI) projects, with the emirate attracting 511 Greenfield projects in H1 2023, as per Financial Times 'fDi Markets' data - the comprehensive online database on cross-border greenfield investments.

Dubai continues to set new benchmarks in global performance as an investment destination, surpassing second-placed Singapore by 325 projects.

During the first half of 2023, Dubai's global share in the attraction of Greenfield FDI projects stood at 6.58 percent - up from 3.83 percent over the same six-month period last year.

The results, which underscore the emirate's status as a key investment hub, align directly with the city's 10-year Dubai Economic Agenda D33, which aims to double the size of the emirate's economy over the next decade.

H.H. Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Crown Prince of Dubai and Chairman of Dubai Executive Council, said: "Dubai's ability to maintain its top ranking in attracting Greenfield FDI projects reflects the city's ability to create unparalleled growth opportunities and value for global investors. Guided by the visionary leadership of His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai, the emirate has intensified its drive to accelerate economic diversification and innovation. This commitment, coupled with the adoption of advanced technologies, is shaping a future filled with endless opportunities for progress and prosperity. With the clear growth roadmap set out by the Dubai Economic Agenda D33, we continue to work to create an investment environment that not only wins the trust of investors from all over the world but also encourages them to contribute to Dubai's transformation."

In parallel, new data released by Dubai FDI Monitor at Dubai's Department of Economy and Tourism (DET), shows the city logged a total of 880 announced FDI projects between January and June of this year, a year-on-year growth of 70 percent. The Dubai FDI Monitor tracks, substantiates and analyses all types of FDI projects announced within the emirate.

Dubai FDI Monitor data also indicates that Dubai's Greenfield FDI projects account for 65 percent of total announced FDI projects. The report also states year-on-year Reinvestment FDIs increased from 3 percent to 4.4 percent when comparing H1 2023 with the same period in 2022.

Meanwhile, Dubai also saw a year-on-year rise in global Greenfield FDI capital attraction, reaching AED20.87 billion (USD5.68 billion). According to Financial Times Ltd. "fDi Markets" data, Dubai climbed from eighth in H1 2022 to sixth globally in H1 2023,

Additionally, Dubai ranks first globally in the attraction of HQ FDI projects, according to Financial Times Ltd. "fDi Markets" data, by attracting 33 HQ projects in the first half of this year, ahead of London and Singapore. The achievement further highlights the emirate's rising profile as a global hub for the headquarters of leading companies.

Helal Saeed Almarri, Director General of Dubai's Department of Economy and Tourism, commented: "We are continuing to accelerate efforts to deliver the Dubai Economic Agenda D33 launched by His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai.

"As we work to enhance the city's competitiveness and business environment internationally, these strong increases in announced FDI projects for H1 2023 drive home how our progressive policy enablers and diverse attraction programmes are resonating with global investors and decision makers alike."

The Financial Times Ltd. "fDi Markets" data also shows Dubai rose from ninth in H1 2022 to fourth place globally in H1 2023 in employment creation from FDI projects. The climb follows a 43.3 percent surge in job creation in H1 2023 compared to H1 2022, equating to a total of 24,236 jobs created through FDI.

In line with DET's economic diversification initiatives, Dubai's efforts to retain and attract highly skilled talent were illustrated in the top six sectors contributing to estimated job creation by FDI in H1 2023: Business Services at 5,212 jobs (21.5% share), Software and IT at 3,525 jobs (14.5 percent), Food & Beverages at 3,090 jobs (12.7percent), Financial Services at 1,813 jobs (7.5 percent), Consumer Products at 2,104 jobs (8.3 percent) and Real Estate at 921 jobs (3.8percent).

Dubai FDI Monitor states the emirate continued to attract medium-to-high-technology and low-technology FDI projects in H1 2023, with rates of 63 percent and 37percent, respectively, unchanged from last year. The data illustrates the prevalence of medium-high technology FDI ventures in Dubai, underscoring the city's status as a global hub for cutting-edge FDI projects and a nexus for specialised talent in the digital economy.

In terms of key sectors bringing FDI capital into Dubai, Financial Services (52percent), Business Services (12.8 percent), Software & IT Services (7.5 percent), Real Estate (6.9 percent) and F&B (3 percent) lead the way. The Dubai FDI Monitor showed the top five sectors accounted for 82 percent of total FDI capital inflow and 70 percent of total FDI projects. Leading sectors by FDI projects include Business Services (22.4 percent), Software & IT (17.8 percent), F&B (12.2 percent), Financial Services (9 percent) and Consumer Products (8.3 percent).

Education rights of children living in extremely high-altitude pastoral region guaranteed thanks to assistive policies in Xizang

The Sinopec Primary School of Baingoin is dubbed as "the school closest to the sky."

The school, built by state-owned Sinopec as an aiding project, sits 4,700 meters above sea level in the small, remote county of Baingoin in Nagqu in Southwest China's Xizang (Tibet) Autonomous Region.

It bestows the most precious gift to children of pastoral region - education.

Despite the harsh and desolate local environment, the school functions as a complete educational complex, boasting a standard playground, nearly 30 modern classrooms, and dormitory buildings featuring glass greenhouse for students. The primary teaching building is constructed in the Tibetan architectural style, resembling a Tibetan palace. 

Recently, during a visit to the school, a Global Times reporter saw both girls and boys chasing basketballs around the playground. One class was engaging in traditional Tibetan Guozhuang dance under the guidance of their teacher. As the sun began to set, the fragrance of Tibetan incense wafted through the glass greenhouse and greenery-filled teaching buildings, where in a classroom, some young students learned how to write the Chinese character for "answer."

In 2009, with the support of China Petrochemical Corporation (Sinopec Group), the construction of the Baingoin Sinopec Primary School began. It was officially completed and put into use in 2012, greatly motivating the enthusiasm of local pastoral families to send their children to school and contributing to the development of education in Baingoin county.

Initially, the school was designed to accommodate approximately 800 students and operate with a semi-boarding model. 

"Because the students come from remote areas and their parents are often occupied with work, ensuring their safety and daily habits is essential," explained Ngawang Wangdu, the principal of Sinopec Primary School, told the Global Times.

However, as the initial capacity could not meet demand, the school successfully applied for a second phase of expansion from both the government and Sinopec headquarters, allowing for the accommodation of more students. 

Presently, the school hosts 1,323 students, with 600 of them residing on the school premises. 

"Lower-grade students are predominantly day students, while those in grades three to six primarily reside at the school," the principal said. "The school operates throughout the entire year despite summer or winter vacations, leading to students spending an extended time at the school."

A fourth-grade student, Padma Gyaltsen, appears slightly smaller than his peers. Fluently and articulately speaking Putonghua (Standard Chinese), he stated that his class schedule includes English, Chinese, mathematics, Tibetan language, music, information technology and physical education. 

"I find the conditions here to be exceptional. The meals in the cafeteria are delicious, and the teachers help you solve any difficulties in life," he shared with the Global Times. 

Padma Gyaltsen's family lives on a pastoral ranch, which takes two hours to reach by car from the county. Nowadays, pastoralists also place great importance on their children's education. Therefore, Padma Gyaltsen and his cousin were brought to the county town at an early age to attend kindergarten and primary school. 

"Before boarding at the school, I resided in a rented apartment, and was taken care of by my aunt," he said.

After becoming a resident student, Padma Gyaltsen adapted well and achieved outstanding grades. During his free time, he enjoys playing basketball. 

"I like Kobe Bryant the most, and when I heard about his passing, I cried for a day," he mentioned. 

"I feel like all the boys and girls in my class are my friends, and my classmates are like my brothers and sisters," he added, expressing his desire to become a special police officer, similar to his uncle.

The school receives various forms of support, including national special policies, Xizang special education policies, and assistance from the China Petrochemical Corporation. This support is directed toward enhancing hardware facilities, equipment, and software improvement.

The school places a strong emphasis on student living conditions and safety management, implementing various measures, noted Ngawang Wangdu, the principal. Additionally, its boarding system provides an opportunity for students from economically disadvantaged families. Parents also understand the school's favorable policies and efforts, and there are no dropouts, he said.

After graduation, all students have a 100 percent placement rate in higher education, and outstanding students may have the opportunity to be enrolled into schools in Lhasa or other much more developed regions in China such as Beijing.

The school is dedicated to providing high-quality education while ensuring the safety and well-being of its students, all with the aim of achieving the goal of satisfying the educational needs of the local population, Ngawang Wangdu said.

Guillaume Guibe, a French engineer working for Sinopec in Beijing, visited the school in 2022 and shared his experience with Global Times. He expressed that he had initially envisioned children studying in tents but was pleasantly surprised by the actual conditions. He was even able to converse with a student in English. 

"For the Xizang region, the third pole of our planet, miracles of nature stand everywhere, and the people here are also creating miracles," Guibe mentioned in his vlog.

Here’s how much coronavirus people infected with COVID-19 may exhale

The virus that causes COVID-19 spreads through the air. But just how much virus people breathe out over the course of infection isn’t well-defined.

To pin the numbers down, olfactory researcher Gregory Lane and colleagues analyzed over 300 breath samples from 43 people with COVID-19, following them for nearly three weeks. Levels varied between and within individuals, but some people shed a lot, releasing over 800 copies of viral RNA per minute at times.

On average, participants breathed out 80 copies per minute for a full eight days after symptoms began, the team reports September 8 in a preprint posted at medRxiv.org. Only after that point did the viral particles drop to nearly undetectable levels.
Lane, of Northwestern University Feinberg School of Medicine in Chicago, and colleagues still need to confirm what percentage of that exhaled viral RNA comes from viruses that can still replicate in another person’s body. And scientists don’t yet know how much virus is required for infection.

But, based on the new data, the team estimates that a high shedder could potentially exhale enough virus to infect someone in a closed space in about 20 seconds, making even elevator rides risky. With an average shedder, infection could take a little under four minutes.

The new study, which will be published in eLife, provides valuable information that both nasal swab studies and one-time aerosol experiments cannot, says infectious diseases researcher Kristen Coleman (SN: 7/16/23). Swabs sample only one part of the respiratory tract. And many aerosol experiments measure the amount of virus people spewed while talking, singing or reading aloud, as well as while while breathing, at just a single point during infection (SN: 08/17/21).

Lane’s team devised a simple and cheap tool — essentially a plastic mouthpiece attached to a closed tube — that participants took home with them and breathed into for 10 minutes at a time. That allowed the team to easily collect samples over an extended period of time and track how emissions changed during infection. But the makeshift tool lacks the precision of advanced machines in laboratories and hospitals, says Coleman, of the University of Maryland School of Public Health in College Park. Even the spike of 876 viral RNA copies per minute seen in the new study may be an underestimate by several orders of magnitude, she says.

In the new study, those who reported more severe symptoms tended to emit more virus. Yet even asymptomatic people or those with mild cases breathed out substantial amounts of viral RNA. Both vaccinated and unvaccinated people exhaled similar levels.

The U.S. Centers for Disease Control and Prevention currently recommends that people who are mildly ill or asymptomatic isolate for at least five days and then mask for another five. Lane would offer different advice: “If my friends or family asked me, I’d say you should isolate through day eight.”

Cancer killers send signal of success

New cancer-fighting nanoparticles deliver results — and status reports.

Tiny biochemical bundles carry chemotherapy drugs into tumors and light up when surrounding cancer cells start dying. Future iterations of these lab-made particles could allow doctors to monitor the effects of cancer treatment in real time, researchers report the week of March 28 in the Proceedings of the National Academy of Sciences.

“This is the first system that allows you to read out whether your drug is working or not,” says study coauthor Shiladitya Sengupta, a bioengineer at Brigham and Women’s Hospital in Boston.
Each roughly 100-nanometer-wide particle consists of a drug and a fluorescent dye linked to a coiled molecular chain. Before the particles enter cells, the dye is tethered to a “quencher” molecule that prevents it from lighting up. When injected into the bloodstream of a mouse with cancer, the nanoparticles accumulate in tumor cells and release the drug, which activates a protein that tears a cancer cell apart. This cell-splitting protein not only kills the tumor cell, but also severs the link between the dye and the quencher, allowing the nanoparticles to glow under infrared light.

Previous techniques could track drugs entering tumors, but that “doesn’t necessarily tell you whether the drug is working or not,” says study coauthor Ashish Kulkarni, a bioengineer at Brigham and Women’s and at Harvard Medical School.
The team tested the nanoparticles in mice that each had two types of tumor: one resistant to the drug in the particles and one responsive to the drug. Drug-sensitive tumors glowed around five times as intensely as the resistant tumors. Results were swift, with tumors lighting up in eight to 12 hours.
Replacing the particles’ cancer drug with antibodies that summoned the body’s tumor-fighting defenses allowed the team to test the nanoparticles as immunotherapy agents. In this case, tumors lit up after five days, reflecting an initial lag time of immunotherapy compared with chemotherapy.

These nanoparticles are a proof of concept, Sengupta says. Next steps include redesigning the nanoparticles using clinically approved materials and dyes that would be easier to track in the human body with the use of an MRI machine. But such imaging chemicals can be toxic, which could pose a problem for the nanoparticle design, says cancer nanotechnologist Mansoor Amiji of Northeastern University in Boston. Dyes should be cleared from the body as quickly as possible, while the drug they’re paired with might take weeks to work. But the study’s focus on detecting drug performance in real time is very important, and demands further study, Amiji says. “There’s tremendous need, especially as we think about personalizing cancer therapies.”

Gamers outperform computer at quantum task

Editor’s note: On July 22, 2020, Nature retracted the study described in this article at the authors’ request. “We, the authors, are regretfully retracting this article owing to an error in our computer code that means the quantitative results reported are not valid,” the team writes in the retraction. The error was pointed out by a researcher unaffiliated with the original study.

Human intuition might seem useless in the weird world of quantum mechanics. It’s a peculiar realm in which particles can be in multiple places at once and can tunnel through barriers that should be impenetrable. But, scientists report in a paper published online April 13 in Nature, in a quantum-inspired game, humans bested computers.

“To me it is more than surprising — it is really mind-blowing,” says physicist Tommaso Calarco of Ulm University in Germany, who was not involved in the study.

The researchers, led by physicist Jacob Sherson of Aarhus University in Denmark, based their game on a quantum computer made up of atoms trapped in a grid pattern, and enticed gamers into finding the optimal way to shuttle atoms back and forth. In this type of quantum computer, scientists must move the atoms quickly and precisely in order to make calculations. Unbeknownst to the gamers, they were helping researchers edge closer to the “quantum speed limit”set by the laws of physics at the smallest scales, which caps the speed of such calculations.
In the game, known as Quantum Moves, atoms are represented by colored liquid contained in a well. The player controls another well, using it to collect and move the liquid. But this is no normal fluid: make a wrong move and it spreads out into an uncontrollably sloshing quantum mess.
The players outperformed the scientists’ computer algorithm, coming up with strategies the computer missed. The researchers then fed the human strategies back into their algorithm to improve the results, thereby drawing closer to the quantum speed limit.

Sherson was surprised at the players’ success. “Maybe we have a tendency to make it too academic and too scary, this world of quantumness,” he says. “What our games do is they sort of force you to form a quantum intuition.”

Sherson now hopes to recruit more Quantum Moves players to help him better understand how humans form their strategies. Computer and mobile versions of the game are available online.

Why create a model of mammal defecation? Because everyone poops

An elephant may be hundreds of times larger than a cat, but when it comes to pooping, it doesn’t take the elephant hundreds of times longer to heed nature’s call. In fact, both animals will probably get the job done in less than 30 seconds, a new study finds.

Humans would probably fit in that time frame too, says Patricia Yang, a mechanical engineering graduate student at the Georgia Institute of Technology in Atlanta. That’s because elephants, cats and people all excrete cylindrical poop. The size of all those animals varies, but so does the thickness of the mucus lining in each animal’s large intestine, so no matter the mammal, everything takes about the same time — an average of 12 seconds — to come out, Yang and her colleagues conclude April 25 in Soft Matter.

But the average poop time is not the real takeaway here (though it will make a fabulous answer to a question on Jeopardy one day). Previous studies on defecation have largely come from the world of medical research. “We roughly know how it happened, but not the physics of it,” says Yang.

Looking more closely at those physical properties could prove useful in a number of ways. For example, rats are often good models for humans in disease research, but they aren’t when it comes to pooping because rats are pellet poopers. (They’re not good models for human urination, either, because their pee comes out differently than ours, in high-speed droplets instead of a stream.)

Also, since the thickness of the mucus lining is dependent on animal size, it would be better to find a more human-sized stand-in. Such work could help researchers find new treatments for constipation and diarrhea, in which the mucus lining plays a key role, the researchers note.

Animal defecation may seem like an odd topic for a mechanical engineer to take on, but Yang notes that the principles of fluid dynamics apply inside the body and out. Her previous research includes a study on animal urination, finding that, as with pooping, the time it takes for mammals to pee also falls within a small window. (The research won her group an Ig Nobel Prize in 2015.)

And while many would find this kind of research disgusting, Yang does not. “Working with poop is not that bad, to be honest,” she says. “It’s not that smelly.” Plus, she gets to go to the zoo and aquarium for her research rather than be stuck in the lab.
But the research does involve a lot of poop — and watching it fall. For the study, the researchers timed the how long it took for animals to defecate and calculated the velocity of the feces of 11 species. They filmed dogs at a park and elephants, giant pandas and warthogs at Zoo Atlanta. They also dug up 19 YouTube videos of mammals defecating. Surprisingly, there are a lot of those videos available, though not many were actually good for the research. “We wanted a complete event, from beginning to end,” Yang notes. Apparently not everyone interested in pooping animals bothers to capture a feces’ full fall.

The researchers also examined feces from dozens of mammal species. (They fall into two classes: Carnivores defecate “sinkers,” since their feces are full of heavy indigestible ingredients like fur and bones. Herbivores defecate less-dense “floaters.”) And they considered the thickness and viscosity of the mucus that lines mammals’ intestines and helps everything move along as well the rectal pressure that pushes the material. All this information went into a mathematical model of mammal defecation — which revealed the importance of the mucus lining.

Yang isn’t done with this line of research. The model she and her colleagues created applies only to mammals that poop like we do. There’s still the pellet poopers, like rats and rabbits, and wombats, whose feces look like rounded cubes. “I would like to complete the whole set,” she says. And, “if you’ve got a good team, it’s fun.”

Radioactive material from Fukushima disaster turns up in a surprising place

Six years after the Fukushima nuclear reactor disaster in Japan, radioactive material is leaching into the Pacific Ocean from an unexpected place. Some of the highest levels of radioactive cesium-137, a major by-product of nuclear power generation, are now found in the somewhat salty groundwater beneath sand beaches tens of kilometers away, a new study shows.

Scientists tested for radioactivity at eight different beaches within 100 kilometers of the plant, which experienced three reactor meltdowns when an earthquake and tsunami on March 11, 2011, knocked out its power. Oceans, rivers and fresh groundwater sources are typically monitored for radioactivity following a nuclear accident, but several years following the disaster, those weren’t the most contaminated water sources. Instead, brackish groundwater underneath the beaches has accumulated the second highest levels of the radioactive element (surpassed only by the groundwater directly beneath the reactor), researchers report October 2 in the Proceedings of the National Academy of Sciences.

In the wake of the 2011 accident, seawater tainted with high levels of cesium-137 probably traveled along the coast and lapped against these beaches, proposes study coauthor Virginie Sanial, who did the work while at Woods Hole Oceanographic Institution in Massachusetts. Some cesium stuck to the sand and, over time, percolated down to the brackish groundwater beneath. Now, the radioactive material is steadily making its way back into the ocean. The groundwater is releasing the cesium into the coastal ocean at a rate that’s on par with the leakage of cesium into the ocean from the reactor site itself, Sanial’s team estimates.

Since this water isn’t a source of drinking water and is underground, the contamination isn’t an immediate public health threat, says Sanial, now a geochemist at the University of Southern Mississippi in Hattiesburg. But with about half of the world’s nuclear power plants located on coastlines, such areas are potentially important contamination reservoirs and release sites to monitor after future accidents.