China takes series of responsive law enforcement operations against Japan-Philippines so-called maritime ‘delimitation talks’; moves demonstrate China’s capability, resolve: Chinese expert

China has recently taken a series of responsive actions, including a special maritime law enforcement operation on Saturday in waters east of Taiwan island, after Japan and the Philippines announced plans to start talks on maritime delimitation in the waters east of China's Taiwan island. A Chinese expert said the coordinated moves demonstrate China's sovereignty and jurisdiction, as well as its capability and resolve to safeguard its maritime rights and interests. 

China launched a special maritime law enforcement operation, led by China's Ministry of Transport and jointly undertaken by the Fujian Maritime Safety Administration, the Guangdong Maritime Safety Administration, the Eastern Navigation Service Center of the National Maritime Safety Administration, and the East China Sea rescue bureau, in the waters east of Taiwan island on Saturday. It is a necessary move in response to Japan and the Philippines' unilateral announcement of the "maritime delimitation talks" on the east of China's Taiwan island, which constitutes a serious violation of China's territorial sovereignty and maritime rights and interests, the Xinhua News Agency reported.

The move came after Japan and the Philippines claimed last month that they would begin so-called formal talks on delimiting the maritime boundary of the so-called exclusive economic zone and the continental shelf between the two countries "in accordance with international law," according to a Reuters report.

Previously, a necessary responsive operation was carried out on June 1, as the China Coast Guard (CCG) task group conducted routine law-enforcement patrols in accordance with the law in the waters east of China's Taiwan island, CCG's spokesperson Jiang Lue said.

"We urge Japan and the Philippines to immediately cease all illegal acts that undermine China's sovereign rights and interests. The CCG will continue to strengthen control and management over relevant waters and take real actions to resolutely safeguard national sovereignty and maritime rights and interests," Jiang said, according to CCG.

No matter it is law enforcement operations of CCG or maritime safety administration, these operations affirm China's sovereignty and jurisdiction over waters east of the Taiwan island, showing the country's resolve, capability and maritime management strength to safeguard maritime rights and interests, Zhang Junshe, a Chinese military affairs expert, told the Global Times on Sunday.

Given the complex maritime conditions in the waters east of Taiwan island, which present a test for vessel performance and law enforcement operations, these operations demonstrate that CCG and maritime authorities are fully capable of conducting regular law enforcement patrols and maritime control in the area, Zhang said.

It further shows that China has set up a sound framework for protecting sovereignty, maritime rights and interests and managing waters around Taiwan island, according to Zhang.

The so-called unilateral delimitation talks between Japan and the Philippines are tantamount to attempting to "carve up" these waters, which seriously infringes upon China's maritime sovereignty and rights and interests, Zhang added.

According to China's domestic law and international law including the UN Convention on the Law of the Sea (UNCLOS), China has exclusive economic zone and continental shelf in this area. Japan and the Philippines' so-called maritime delimitation talks constitute a severe violation of China's maritime rights and interests, UNCLOS and other international law and basic norms governing international relations, Chinese Foreign Ministry spokesperson Mao Ning stressed during a previous press conference on May 29 after the claim by Tokyo and Manila.

"The so-called delimitation talks are completely illegal, null and void, and will have no effect on China's claims to rights in the area east of the Taiwan island or exercise of China's lawful rights," Mao said, adding that China urges Japan and the Philippines to immediately stop any violation of China's maritime rights and interests and take concrete actions to uphold regional peace and stability.

In violation of the international law, Zhang said that Japan and the Philippines aim to jointly contain China and restrict its maritime operations as part of their coordination with the so-called Indo-Pacific strategy with the plan.

The expert added that Japan also seeks to provoke China alongside the Philippines in adjacent waters, hoping to ease the pressure from China's countermeasures over its actions concerning the Diaoyu Islands.

In response to the Democratic Progressive Party (DPP) authorities' echoing of the move by Japan and Philippines, Zhu Fenglian, a spokesperson for the State Council Taiwan Affairs Office said on June 3 that compatriots on both sides of the Taiwan Straits belong to the Chinese nation, according to CCTV News.

"We should stand firm on our national stance, uphold national righteousness, and jointly safeguard national sovereignty and territorial integrity as well as the overall interests of the Chinese nation. If the DPP authorities dare to collude with external forces and betray national interests, they will surely be spurned by compatriots on both sides of the Taiwan Straits and punished by history," Zhu added.

Faced with public opinion pressure, the DPP authorities still haven't voiced strong protests. Such a compromising stance essentially amounts to acts that harm national and ethnic interests, Zhang said. "Chinese people on both sides of the Taiwan Straits should work together to safeguard our country's sovereignty, maritime rights and interests as well as national interests," he added.

Regardless of how external forces behave, the steps taken by China's relevant departments make clear China's position, the expert said, and is a testament to China's resolve and capacity to secure national sovereignty and maritime rights and interests.

Maintaining peace and stability across Taiwan Straits is greatest common interest of China, US: mainland spokesperson

In his keynote speech at the 23rd Shangri-La Dialogue held in Singapore, US Defense Secretary Pete Hegseth did not mention Taiwan — a rare omission — and instead highly praised a series of outcomes achieved during US President Donald Trump's recent visit to China. In response, Zhu Fenglian, spokesperson for the State Council Taiwan Affairs Office, said on Wednesday that the Taiwan question is China's internal affair and brooks no external interference. She said that maintaining peace and stability across the Taiwan Straits represents the greatest common interest shared by China and the US.

China Central Television documentary series reveals sophisticated cyber espionage campaigns targeting nation’s institutions

China Central Television (CCTV) is broadcasting a five-episode documentary series on confidentiality and information security awareness from Tuesday to Saturday, with Thursday's episode focusing on cyberattacks and the potential risks of information leaks hidden in everyday work and life.

Introducing the episode, CCTV News said in a report released on Friday that cyber warfare has intensified worldwide over the past 15 years, with cyber espionage aimed at stealing state secrets emerging as a primary objective behind many attacks.

To illustrate the scale and sophistication of such threats, CCTV News cited a case that unfolded in April 2022, when a Chinese university discovered an unusual Trojan program attempting to illegally obtain privileges within its email system. After the university reported the incident, the National Computer Virus Emergency Response Center, together with relevant authorities, quickly formed a joint technical team to investigate.

The findings, CCTV News said, far exceeded initial expectations. Investigators concluded that the cyberattack originated from a foreign government intelligence agency and was aimed at stealing critical technical data, including configurations of key network equipment, network management information and operational maintenance data.

According to the report, the intelligence agency deployed 41 specialized cyberattack tools in pursuit of objectives such as achieving a single-point breakthrough, gradually penetrating target systems and conducting long-term intelligence theft. Among them were 14 different versions of a backdoor tool known as " SlyHeretic," while the attack chain involved more than 1,100 separate intrusion pathways.

As the investigation progressed, authorities uncovered a highly targeted cyber campaign. The intelligence agency allegedly used a platform known as "FoxAcid" to conduct man-in-the-middle attacks against internal hosts and servers at the university, while a remote-control cyber weapon dubbed " NOPEN" was employed to seize control of multiple critical servers.

Further forensic analysis led investigators to identify another cyber espionage tool called "SecondDate." CCTV News said the software was designed to remain resident on network boundary devices such as gateways, edge routers and firewalls for extended periods, enabling malicious functions including traffic sniffing, session tracking, traffic redirection and data tampering.

The documentary noted that only one year after the exposure of the university case, another key Chinese institution became the target of a separate cyberattack launched by an overseas intelligence agency. The operation reportedly lasted nearly a year and involved the deployment of 42 specialized cyber weapons.

To conceal the source of the attack, the perpetrators allegedly employed high-strength encryption algorithms in an attempt to erase traces of their activities. However, CCTV News said the carefully planned and highly covert operation was detected in time, continuously monitored and ultimately disrupted after relevant organizations upgraded their cybersecurity defenses and severed the attack chain.

Beyond these cases, CCTV News cited several other cyber espionage incidents targeting China. In August 2024, an advanced materials design research institution was reportedly attacked, with more than 270 computers infected by control Trojans designed to steal sensitive information.

In June 2025, the National Computer Virus Emergency Response Center released an investigative report exposing several hacker groups affiliated with the DPP authorities' "Information, Communications and Electronic Force Command" for allegedly conducting cyber espionage activities against the mainland.

CCTV News quoted Du Ye, a professor at Beijing Jiaotong University, as saying that such intelligence-gathering operations primarily target Chinese government agencies, defense sector and scientific research institutions.

"These espionage activities are mainly aimed at important and sensitive sectors including government affairs, military industries and scientific research," Du said. "The targets include not only Party and government organs and the military, but also research institutes, universities, central state-owned enterprises and other state-owned companies."

He added that the primary objective of these operations is to obtain sensitive technological information, core data intelligence and national strategic planning information, with the ultimate goal of containing China's technological advancement and strategic development.

The documentary also highlighted several common cybersecurity risks that could lead to information leaks, including inserting USB drives from unknown sources into workplace computers, charging mobile phones infected with Trojan malware through office computers, installing internet-downloaded software on classified computers without authorization, and clicking on unknown emails or suspicious web links.

By examining both major cyber espionage cases and everyday security vulnerabilities, the documentary seeks to raise public awareness of information security risks and strengthen cybersecurity vigilance across society.

Shenzhou-21 astronauts arrive in Beijing

The Shenzhou-21 crew arrived in Beijing by plane on Saturday after successfully completing their mission.

The three astronauts, Zhang Lu, Wu Fei and Zhang Hongzhang, returned to Earth safely on Friday evening aboard the Shenzhou-22 crewed spaceship, wrapping up a 210-day stay in orbit.

According to the China Manned Space Agency (CMSA), they are all in good health and the Shenzhou-21 spaceflight mission is a complete success.

The crew will enter a period of medical quarantine, and undergo comprehensive medical examinations and health evaluations, the CMSA said, noting that they will meet the press in Beijing following the end of this period.

Report on China-EU environment, climate cooperation released

A think tank report titled "China-EU Cooperation on Environment and Climate: Progress and Prospects" was released globally on Friday.

The report was jointly released by the Research Center for Xi Jinping Thought on Ecological Civilization, the National Energy Conservation Center, the Xinhua Institute and the Institutes of Science and Development under the Chinese Academy of Sciences.

It consists of five sections, namely the introduction, bilateral joint efforts to build a community of all life on Earth, deepened bilateral cooperation to address climate change, concrete progress in bilateral cooperation on the eco-environment, and steady long-term development of bilateral cooperation concerning the environment and climate.

In the face of ecological and environmental challenges, China and the European Union (EU), the largest developing country and the largest union of developed countries, respectively, must shoulder their responsibilities, carry out cooperation on the environment and climate, and work together to maintain sustainable development of the Earth, according to the report.

Noting green as the distinctive color of China-EU cooperation, the report said this cooperation not only enriches and develops the bilateral comprehensive strategic partnership, but also directly advances the environmental governance, trade and investment of both sides, benefiting the entire world.

Looking at the future, the two sides should work together to promote more in-depth and pragmatic cooperation, further dovetail their environmental and climate policies through high-level dialogue and cooperation mechanisms, establish a long-term cooperation framework, and promote global environmental governance and climate action, the report stated.

The report also called for the further strengthening of the bilateral green partnership, and jointly building a community of all life on Earth, and make contributions to promoting a cleaner and more beautiful world.

More Taiwan sugar apple packaging factories, orchards registered by mainland customs

A new batch of 34 sugar apple packaging factories and 1,263 orchards in Taiwan have been registered by the General Administration of Customs, which will create favorable conditions for their entry to the mainland, Zhu Fenglian, a spokesperson for the State Council Taiwan Affairs Office, said at a press briefing on Friday. Zhu also noted that the sugar apple season is approaching in the island.

Since the announcement of the resumption of market entry for sugar apples in June, 37 sugar apple packaging factories and 1,288 orchards in Taitung county have been approved by the mainland. Businesses can inquire about the relevant information on the customs website. Packaging factories and orchards that have not yet passed the audit can learn the rectification requirements, according to Zhu.

Zhu expressed the mainland's willingness to have discussions with relevant parties in Taiwan to resume the entry of more agricultural and fishery products.

Due to the repeated instances of quarantine pests being detected, the mainland suspended the entry of sugar apples from Taiwan in September 2021 to mitigate the risk of plant epidemics, Xinhua News Agency reported.

STEM institute in Shanghai to advance innovation in China

The resolution adopted by UNESCO to establish a UNESCO International Institute for STEM Education (IISTEM) in Shanghai will assist China in sharing its education experience and growing to be a leader in global STEM education, an expert told the Global Times on Wednesday.

During the 42nd Session of the UNESCO General Conference in Paris last week, UNESCO announced the establishment of the IISTEM in Shanghai. This marks the first UNESCO Category 1 Institute for Science, Technology, Engineering, and Mathematics to be established in China.

Category 1 institutes are crucial to UNESCO's mission. They act as incubators for new ideas and serve as standard-setters, facilitators of international cooperation, hubs for information sharing and capacity builders within their respective areas of competence. 

Chinese Foreign Ministry spokesperson Wang Wenbin said at an earlier press conference that the Chinese government attaches great importance to education and treats STEM education as a key approach to cultivating innovative and versatile talent. 

"We will act earnestly on our commitment, collaborate with UNESCO to implement the resolution and work for the early establishment and operation of the institute to contribute more to the UN's agenda for sustainable development as well as world peace and development," said Wang. 

The move was preceded by UNESCO's resolution to establish a teacher education center in Shanghai Normal University in 2017. The teacher education center is a UNESCO Category 2 Center and followed two other Category 2 education centers in China: the International Research and Training Centre for Rural Education in Beijing and the International Centre for Higher Education Innovation in Shenzhen, South China's Guangdong Province.

The establishment of the IISTEM demonstrates the recognition of China's national strength and a nod to China's commitment to building a community of shared future for mankind, Ning Bo, a professor with the Research Institute for International and Comparative Education of Shanghai Normal University, who is also a project manager at the UNESCO teacher education center, told the Global Times on Wednesday.

The decision is also a reflection of Shanghai's increasing prominence in international education.

Shanghai topped two consecutive rounds (2009 and 2012) of the Program for International Student Assessment (PISA) tests, a triennial survey of 15-year-old students that focuses on proficiency in reading, mathematics and science. The city's education system stands out as one of the strongest in the world, according to a report by the World Bank.

"Finland was a paragon when people talked about a successful education system. But global attention has been diverted to Shanghai thanks to the city's stellar performance in PISA," said Ning. 

Shanghai's policies and investments have created a great teacher workforce, established clear learning standards and regular student assessments, and struck a balance between autonomy and accountability in school management, the report said.

"Shanghai is a pioneer in China's opening-up and reform in all sectors. The city eagerly welcomes international institutions like IISTEM to come and contribute to the development of its cosmopolitan nature," Ning said.

The institute is a fresh example of China's efforts to increase its influence on the world stage and play a leading role in international organizations, said the professor.

Technically, it's a platform for China to share its education experience with the world, especially in the field of STEM. Expertise and resources from around the world will be drawn to Shanghai, so it will advance the development of STEM education in China and promote Shanghai's economic and social development, Ning noted. 

"China has achieved globally recognized progress in economic and social development. Through this opportunity, we aspire for the world to gain a comprehensive understanding of China and its developmental path from an educational and cultural perspective," Ning said.

Shocking stories tell tale of London Zoo’s founding

When Tommy the chimpanzee first came to London’s zoo in the fall of 1835, he was dressed in an old white shirt.

Keepers gave him a new frock and a sailor hat and set him up in a cozy spot in the kitchen to weather the winter. Visitors flocked to get a look at the little ape roaming around the keepers’ lodge, curled up in the cook’s lap or tugging on her skirt like a toddler. Tommy was a hit — the zoo’s latest star.
Six months later, he was dead.

Tommy’s sorrowful story comes near the middle of Isobel Charman’s latest book, The Zoo, a tale of the founding of the Gardens of the Zoological Society of London, known today as the London Zoo. The book lays out a grand saga of human ambition and audacity, but it’s the animals’ stories — their lives and deaths and hardships — that catch hold of readers and don’t let go.

Charman, a writer and documentary producer, resurrects almost three decades of history, beginning in 1824, when the zoo was still just a fantastical idea: a public menagerie of animals “that would allow naturalists to observe the creatures scientifically.”

It was a long, hard path to that lofty dream, though: In the zoo’s early years, exotic creatures were nearly impossible to keep alive. Charman unloads a numbing litany of animal misery that batters the reader like a boxer working over a speed bag. Kangaroos hurl themselves at fences, monkeys attack each other in cramped, dark cages and an elephant named Jack breaks a tusk while smashing up his den. Charman’s parade of horrors boggles the mind, as does the sheer number of animals carted from all corners of the world to the cold, wet enclosures of the zoo.

Her story is an incredible piece of detective work, told through the eyes of many key players and famous figures, including Charles Darwin. Charman plumbs details from newspaper articles, diaries, census records and weather reports to craft a narrative of the time. She portrays a London that’s gritty, grimy and cold, where some aspects of science and medicine seem stuck in the Dark Ages. Doctors still used leeches to bleed patients, and no one had a clue how to care for zoo animals.
Zoo workers certainly tried — applying liniment to sores on a lion’s legs, prescribing opium for a sick puma and treating a constipated llama with purgatives. But nothing seemed to stop the endless conveyor belt that brought living animals in and carried dead ones out. Back then, caring for zoo animals was mostly a matter of trial and error, Charman writes. What seems laughably obvious now — animals need shelter in winter, cakes and buns aren’t proper food for elephants — took zookeepers years to figure out.

Over time the zoo adapted, making gradual changes that eventually improved the lives of its inhabitants. It seemed to morph, finally, from mostly “a playground of the privileged,” as Charman calls it, to a reliable place for scientific study, where curious people could learn about the “wild and wonderful” creatures within.

One of those people was Darwin, whose ideas about human origins clicked into place after he spent time with Jenny the orangutan. Her teasing relationship with her keeper, apparent understanding of language and utter likeness to people helped convince Darwin that humankind was just another branch on the tree of life, Charman writes.
Darwin’s work on the subject wouldn’t be published for decades, but in the meantime, the zoo’s early improvements seemed to have stuck. Over 30 years after Tommy the chimpanzee died in his keeper’s arms, a hippopotamus gave birth to “the first captive-bred hippo to be reared by its mother,” Charman notes. The baby hippo not only survived — she lived for 36 years.

Readers may wonder how standards for animal treatment have changed over time. But Charman sticks to history, rather than examining contrasts to modern zoos. Still, what she offers is gripping enough on its own: a bold, no-holds-barred look at one zoo’s beginning. It was impressive, no doubt. But it wasn’t pretty.

Random mutations play large role in cancer, study finds

Researchers have identified new enemies in the war on cancer: ones that are already inside cells and that no one can avoid.

Random mistakes made as stem cells divide are responsible for about two-thirds of the mutations in cancer cells, researchers from Johns Hopkins University report in the March 24 Science. Across all cancer types, environment and lifestyle factors, such as smoking and obesity, contribute 29 percent of cancer mutations, and 5 percent are inherited.
That finding challenges the common wisdom that cancer is the product of heredity and the environment. “There’s a third cause and this cause of mutations is a major cause,” says cancer geneticist Bert Vogelstein.

Such random mutations build up over time and help explain why cancer strikes older people more often. Knowing that the enemy will strike from within even when people protect themselves against external threats indicates that early cancer detection and treatment deserve greater attention than they have previously gotten, Vogelstein says.

Vogelstein and biomathematician Cristian Tomasetti proposed in 2015 that random mutations are the reason some organs are more prone to cancer than others. For instance, stem cells are constantly renewing the intestinal lining of the colon, which develops tumors more often than the brain, where cell division is uncommon. That report was controversial because it was interpreted as saying that most cancers are the result of “bad luck.” The analysis didn’t include breast and prostate cancers. Factoring in those common cancers might change the results, some scientists said. And because the researchers looked at only cancer within the United States, critics charged that the finding might not hold up when considering places around the world where different environmental factors, such as infections, affect cancer development.

In the new study, Vogelstein, Tomasetti and Hopkins colleague Lu Li examined data from 69 countries about 17 types of cancer, this time including breast and prostate. Again, the researchers found a strong link between cancer and tissues with lots of dividing stem cells. The team also used DNA data and epidemiological studies to calculate the proportions of mutations in cancer cells caused by heredity or environmental and lifestyle factors. Remaining mutations were attributed to random errors — including typos, insertions or deletions of genes, epigenetic changes (alterations of chemical tags on DNA or proteins that affect gene activity) and gene rearrangements. Such errors unavoidably happen when cells divide.
Usually cancer results after a cell accumulates many mutations. Some people will have accumulated a variety of cancer-associated mutations but won’t get cancer until some final insult goads the cell into becoming malignant (SN: 12/26/15, p. 28). For some tumors, all the mutations may be the hit-and-miss result of cell division mistakes. There’s no way to evade those cancers, Vogelstein says. Other malignancies may spring up as a result of different combinations of heritable, environmental and random mutations. Lung cancer and other tumor types that are strongly associated with environmentally caused mutations could be eluded by avoiding the carcinogen, even when most of the mutations that spur cancer growth arise from random mistakes, Tomasetti says.

“They are venturing into new territory,” says Giovanni Parmigiani, a biostatistician at the Harvard T.H. Chan School of Public Health. Tomasetti, Li and Vogelstein are the first to rigorously estimate the contribution of environment, heredity and DNA-copying errors to cancer, he says. “Perhaps the estimates will improve in the future, but theirs seems like a very solid starting point.”

Now that the Hopkins researchers have pointed it out, the relationship between dividing cells and cancer seems obvious, says biological physicist Bartlomiej Waclaw of the University of Edinburgh. “I don’t think that the existence of this correlation is surprising,” he says. “What’s surprising is that it’s not stronger.”

Some tissues develop cancers more or less often than other tissues with a similar number of cell divisions, Waclaw and Martin Nowak of Harvard University pointed out in a commentary on the Hopkins study, published in the same issue of Science. That suggests some organs are better at nipping cancer in the bud. Discovering how those tissues avoid cancer could lead to new ways to prevent tumors elsewhere in the body, Waclaw suggests.

Other researchers say the Hopkins team is guilty of faulty reasoning. “They are assuming that just because tissues which have high stem cell turnover also have high cancer rates, that one is causing the other,” says cancer researcher Anne McTiernan of the Fred Hutchinson Cancer Research Center in Seattle. “In this new paper, they’ve added data from other countries but haven’t gotten away from this biased thinking.”

Tomasetti and colleagues based their calculations on data from Cancer Research UK that suggest that 42 percent of cancers are preventable. Preventable cancers are ones for which people could avoid a risk factor, such as unprotected sun exposure or tanning bed use, or take positive steps to lower cancer risks, such as exercising regularly and eating fruits and vegetables. But those estimates may not be accurate, McTiernan says. “In reality, it’s very difficult to measure environmental exposures, so our estimates of preventability are likely very underestimated.”

To attribute so many cancer mutations to chance seems to negate public health messages, Waclaw says, and some people may find the calculation that 66 percent of cancer-associated mutations are unavoidable disturbing because they spend a lot of time trying to prevent cancer. “It’s important to consider the randomness, or bad luck, that comes with cellular division,” he says.

In fact, Tomasetti and Vogelstein stress that their findings are compatible with cancer-prevention recommendations. Avoiding smoking, tanning beds, obesity and other known carcinogens can prevent the “environmental” mutations that combine with inherited and random mutations to tip cells into cancer. Without those final straws loaded from environmental exposures, tumors may be averted or greatly delayed.

People with cancer may be able to take some comfort from the study, says Elaine Mardis, a cancer genomicist at the Nationwide Children’s Hospital in Columbus, Ohio. “Perhaps the positive message here is that, other than known risk factors, such as smoking, radiation exposure and obesity, there is a component of cancer that is simply a consequence of being human.”

Language heard, but never spoken, by young babies bestows a hidden benefit

The way babies learn to speak is nothing short of breathtaking. Their brains are learning the differences between sounds, rehearsing mouth movements and mastering vocabulary by putting words into meaningful context. It’s a lot to fit in between naps and diaper changes.

A recent study shows just how durable this early language learning is. Dutch-speaking adults who were adopted from South Korea as preverbal babies held on to latent Korean language skills, researchers report online January 18 in Royal Society Open Science. In the first months of their lives, these people had already laid down the foundation for speaking Korean — a foundation that persisted for decades undetected, only revealing itself later in careful laboratory tests.

Researchers tested how well people could learn to identify and speak tricky Korean sounds. “For Korean listeners, these sounds are easy to distinguish, but for second-language learners they are very difficult to master,” says study coauthor Mirjam Broersma, a psycholinguist of Radboud University in Nijmegen, Netherlands. For instance, a native Dutch speaker would listen to three distinct Korean sounds and hear only the same “t” sound.

Broersma and her colleagues compared the language-absorbing skills of a group of 29 native Dutch speakers to 29 South Korea-born Dutch speakers. Half of the adoptees moved to the Netherlands when they were older than 17 months — ages at which the kids had probably begun talking. The other half were adopted as preverbal babies younger than 6 months. As a group, the South Korea-born adults outperformed the native-born Dutch adults, more easily learning both to recognize and speak the Korean sounds.

This advantage held when the researchers looked at only adults who had been adopted before turning 6 months old. “Even those who were only 3 to 5 months old at the time of adoption already knew a lot about the sounds of their birth language, enough even to help them relearn those sounds decades later,” Broersma says.

Uncovering this latent skill decades after it had been imprinted in babies younger than 6 months was thrilling, Broersma says. Many researchers had assumed that infants start to learn the sounds of their first language later, around 6 to 8 months after birth. “Our results show that that assumption must have been wrong,” she says.

It’s possible that some of these language skills were acquired during pregnancy, as other studies have hinted. Because the current study didn’t include babies who were adopted immediately after birth, the results can’t say whether language heard during gestation would have had an influence on later language skills. Still, the results suggest that babies start picking up language as soon as they possibly can.