分类： science

For the first time ever, a wild Sumatran orangutan has been recorded crossing a busy public road via a purpose-built artificial canopy bridge, a landmark breakthrough for conservation efforts protecting this critically endangered species, Indonesian environmental leaders announced Monday.

Decades of rapid economic and infrastructure development across Sumatra have gnawed away at the ancient jungle habitats that orangutans depend on, splitting once-contiguous wild populations into isolated, vulnerable groups and raising the frequency of deadly human-orangutan conflicts as hungry or displaced primates enter settled areas. This latest milestone comes from conservation work focused on a high-stakes stretch of infrastructure in North Sumatra’s Pakpak Bharat district, where the Lagan–Pagindar road serves as a critical lifeline connecting remote local communities to schools, medical care and government services. When the road was upgraded in 2024, the expansion widened the gap in the forest canopy, completely eliminating the natural tree-to-tree crossings that arboreal orangutans rely on to move between forest patches. The road now cuts the region’s estimated 350 wild orangutans into two completely disconnected groups, separated between the Siranggas Wildlife Reserve and the Sikulaping Protection Forest.

“Development was necessary for people,” explained Erwin Alamsyah Siregar, executive director of Indonesian conservation non-profit Tangguh Hutan Khatulistiwa (TaHuKah). “But without intervention, it would have left orangutans trapped on either side.”

Working in partnership with the Sumatran Orangutan Society (SOS) and local and national government agencies, TaHuKah rolled out a low-cost, targeted solution: five rope canopy bridges suspended between mature trees on opposite sides of the road, designed to let tree-dwelling wildlife cross safely above moving vehicle traffic. Each bridge was sized and reinforced to support the weight of orangutans— the world’s largest tree-dwelling mammal—and motion-activated camera traps were installed at every site, placed after extensive surveys mapping orangutan nesting sites, forest cover and local wildlife movement patterns. A long-term monitoring program, including regular anti-encroachment patrols, was also put in place to protect the corridor.

Conservationists waited two full years for the first orangutan to use the crossing. In the months after installation, smaller arboreal species were the first to test the structures: squirrels, langur monkeys and macaques were followed by gibbons, a encouraging sign that the bridges were viewed as safe. Over time, the young male orangutan that would eventually make the crossing gradually acclimated to the structure: building sleeping nests near the bridge edge, lingering to observe the crossing and testing the rope’s stability repeatedly before committing to the full traverse.

“They observe,” Siregar said. “They don’t rush. They watch, they try, they retreat. Only when they’re certain it’s safe do they move.”

The brief, historic crossing was captured by the motion-activated camera, which recorded the young orangutan pausing at the forest edge, gripping the bridge rope with deliberate care before stepping out over the open road. Halfway across, it paused to glance down at the traffic below before completing the crossing to the opposite forest. Conservationists emphasize this is the first documented case of any Sumatran orangutan using an artificial canopy bridge to cross a public road. While orangutans have used similar structures to cross rivers and private industrial forest roads elsewhere, busy public roads—with their constant noise, vehicle movement and unpredictability—present a far larger barrier and greater risk to the shy primates.

For the long-term survival of Sumatran orangutans, reestablishing habitat connectivity is a critical priority. Isolated populations face extreme risks of inbreeding, genetic decline and eventual population collapse, while restored connectivity allows orangutans to access new food sources, find mates and maintain genetically healthy, resilient populations. Once widespread across much of southern Asia, orangutans now survive only on the Indonesian islands of Sumatra and Borneo. Current conservation data puts the total wild Sumatran orangutan population at fewer than 14,000 individuals, alongside just 800 Tapanuli orangutans and roughly 104,700 Bornean orangutans, all three species classified as critically endangered by the International Union for Conservation of Nature.

“This was the moment we had been waiting for,” Siregar told the Associated Press. “We are very grateful that the canopy here provides benefits for orangutan conservation efforts.” Conservation teams now hope this pioneering crossing will encourage more orangutans to use the bridges, and that the successful model can be replicated in other fragmented orangutan habitats across Sumatra and Borneo to reduce extinction risk for the species. “These bridges allow orangutans to move, to mix, to maintain healthy populations,” Siregar said. “It reduces the risk of extinction.”

On China’s 11th National Space Day, marked on April 24 2026, the China National Space Administration announced a groundbreaking scientific breakthrough at a celebratory event in Chengdu, Sichuan province. Chinese researchers have confirmed the discovery of two previously unknown minerals from lunar soil and rock samples retrieved by the country’s Chang’e 5 mission more than five years ago, marking a major milestone in humanity’s exploration of the moon.

Both new minerals, officially named magnesiochangesite-(Y) and changesite-(Ce), have received formal approval from the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association, the global authoritative body for mineral classification and registration. This discovery brings the total number of new lunar minerals identified by Chinese scientists to three, following the first Chinese-discovered lunar mineral, changesite-(Y), which was documented in 2022. Globally, these two new entries are the seventh and eighth lunar minerals ever confirmed from samples physically brought back to Earth from the moon.

Magnesiochangesite-(Y) was isolated and characterized by a research team headed by Li Ziying, a senior geoscientist at the Beijing Research Institute of Uranium Geology of the China National Nuclear Corp. The tiny mineral grain was found embedded within basalt clasts from Chang’e 5’s drill-collected lunar samples, with particle sizes ranging between just 2 and 30 micrometers — small enough to be invisible to the naked human eye.

The second new mineral, changesite-(Ce), was discovered by a team led by Hou Zengqian, an academician of the Chinese Academy of Geological Sciences. Notably, researchers have identified this mineral not only in the Chang’e 5 collected samples, but also in a lunar meteorite that naturally fell within China’s national territory. Changesite-(Ce) forms along the margins of other lunar crystals including anorthite, ferrosilite, fluorapatite and ilmenite, with grain sizes measuring approximately 3 to 15 micrometers.

Per the China National Space Administration’s official statement, both newly identified minerals are rare earth phosphate minerals trapped within the fine particulate fraction of lunar soil. Both possess delicate, unique crystalline structures that have no matching analog among naturally occurring minerals found on Earth. Along with the previously discovered changesite-(Y), the two new minerals belong to the merrillite group — a category of phosphate minerals commonly detected in extraterrestrial samples from the moon, Mars and asteroids, but one that displays wide compositional variation and uneven distribution across different planetary bodies.

The Chang’e 5 robotic mission, launched in late 2020, stands as one of the most significant deep-space exploration endeavors of the 21st century. The 23-day mission successfully returned 1,731 grams of lunar rock and soil to Earth, marking the first time any nation had collected fresh lunar samples in 44 years, following the Soviet Union’s final lunar sample return mission in 1976. With this achievement, China became the third country in history to successfully retrieve geological materials from the moon, after the United States and the former Soviet Union.

Li Ziying, the lead researcher for the magnesiochangesite-(Y) discovery, noted that the Chang’e 5 landing site differs significantly from the sites visited by U.S. Apollo missions and Soviet Luna missions, with a much younger geological formation timeline. This difference means the Chang’e 5 samples hold unique chemical and geological characteristics not seen in previously collected lunar materials.

“The discovery of magnesiochangesite-(Y) expands the global catalog of confirmed lunar minerals, and offers a new mineralogical reference point for research into the moon’s formation and evolutionary history, ancient lunar magmatic activity, and lunar chemical differentiation processes,” Li explained.

Officials from the China National Space Administration emphasized that the new discoveries will provide critical empirical evidence for advancing deep research into the moon’s bulk material composition, long-term geological evolution, and early origins. These findings represent a landmark achievement in integrating large-scale deep-space exploration infrastructure with cutting-edge basic scientific research, and carry major significance for advancing humanity’s collective understanding of the moon and the broader solar system.

In a groundbreaking, never-before-documented event for the region, an 8-year-old female yak in Driru County, Xizang Autonomous Region, has given birth to three healthy, naturally conceived calves, marking the first officially recorded natural yak triplet birth in Xizang’s history.

As of the latest update, both the mother yak and her three newborns are in stable, good condition. The young calves are nursing normally and have already acclimated smoothly to Xizang’s harsh high-altitude, low-temperature environment, a testament to their hardiness.

Animal husbandry researchers explain that yaks are evolutionarily adapted to single-calve pregnancies, making a natural triplet birth an extraordinarily rare occurrence. This unprecedented birth is far more than a curious local oddity: it sheds new light on the outstanding genetic characteristics of Xizang’s indigenous yak breeds, and serves as tangible evidence of the region’s improving ecological environment and widespread adoption of standardized, science-based grazing management practices over recent years.

In response to this rare event, local agricultural and animal husbandry authorities have moved quickly to implement regular professional health checks and customized care plans to protect the mother and her triplets. Scientific teams will also conduct long-term follow-up genetic studies on the three calves, aiming to unpack the biological mechanisms behind this unusual reproductive outcome and inform advances in local yak breeding programs.

Researchers and industry analysts note that this milestone discovery carries substantial value for the future of Xizang’s yak industry. Insights gained from the triplets could help livestock scientists optimize yak breed lines, improve overall reproductive efficiency for the species, and drive the high-quality development of Xizang’s signature animal husbandry sector, a core source of income for many local herding communities.

A breakthrough broadly neutralizing influenza antibody, developed under the umbrella of the Shanghai Institute of Infectious Disease and Biosecurity (SIIDB), has reached a major milestone: it has formally entered industrial application, institute officials announced in a recent press statement.

Named SII-007, the antibody was incubated at SIIDB and spearheaded by a research team led by Ying Tianlei, a part-time principal investigator at the institute. The entire research and early commercialization process was backed by 21 million yuan ($3.1 million) in funding, a structure that combines an upfront patent transfer fee with post-commercialization revenue sharing. Per Ying’s update, the formal patent transfer for the technology was finalized in February 2026, with regulatory approval from China’s National Medical Products Administration expected by the end of the year, clearing the way for the candidate to enter human clinical trials.

SII-007 was engineered to solve a longstanding challenge in influenza prevention and control: the rapid mutation rate of influenza viruses that often renders traditional vaccines and antibodies ineffective. Unlike conventional antibody development frameworks, this candidate leverages a combined R&D system that integrates artificial intelligence and synthetic immunology, breaking through the key technical limitation of limited broad-spectrum activity that plagues most existing influenza antibodies. As a result, the molecule can effectively target and neutralize multiple currently circulating epidemic influenza strains.

As a passive immunotherapy, SII-007 delivers immediate protective effects upon administration, eliminating the two-week immune induction period required for traditional inactivated influenza vaccines. Delivered via aerosol inhalation, the antibody also offers greater usability than injectable alternatives and requires far lower effective doses. Its high molecular stability further allows it to provide protection against severe influenza infection, a critical benefit for high-risk groups such as the elderly and immunocompromised populations.

From a commercial and intellectual property perspective, the core patent portfolio for SII-007 has been fully established, with all intellectual property rights independently owned and regulated by Chinese entities. Leveraging SIIDB’s established technology transfer mechanism, the project secured industrial partnership with a fund under Fosun Pharma within just one month of completing its proof of concept, accelerating progress toward full-scale industrialization.

Founded in 2020 as a joint initiative between the Shanghai municipal government and Fudan University, SIIDB has built an end-to-end technology transfer ecosystem focused on translating early-stage infectious disease research into real-world applications. The institute receives dedicated special funding from the Shanghai government for major breakthrough technology projects, and has trained more than 500 master’s and doctoral students in the fields of infectious disease and biosecurity to date.

To support open innovation across the domestic research community, SIIDB provides free open access to five of its core research platforms, including a vaccine innovation platform and a national-level pathogen sample bank. It also partners with two specialized law firms to deliver precise intellectual property management and commercial risk assessment for both in-house and collaborative projects.

By the end of 2025, SIIDB’s cumulative research output includes 906 papers indexed in the Science Citation Index, 38 established pathogen infection models for research use, and 94 filed national and international patent applications. The total cumulative value of technology transfers completed by the institute has exceeded 44.5 million yuan, a track record that reflects the success of its institutional innovation model.

These outcomes are directly tied to SIIDB’s deliberate focus on institutional and procedural innovation, particularly its commitment to open access innovation infrastructure. In December 2024, the institute launched a joint laboratory with Chongqing Zhifei Biological Products Co Ltd, backed by a total investment of 15 million yuan to advance shared research goals. It has also prioritized global collaboration: in 2023, it established a cross-border joint research center for infectious disease control, designed to strengthen global prevention and control systems focused on source detection and border interception of emerging pathogens.

Wu Fan, director of SIIDB and vice-dean of Shanghai Medical College at Fudan University, noted that building a full-lifecycle technology transfer system requires coordinated input from industrial parks, investment institutions, and research bodies. She emphasized that dedicated concept validation centers are a critical missing link to help early-stage biotech startups cross the so-called “valley of death” that often sinks promising innovations before they reach commercialization.

Wu also issued a warning about the risks associated with acquisitions of early-stage domestic biotech innovations by large multinational corporations, noting that such deals can put promising domestic breakthroughs out of reach of local public health systems. For this reason, she argued, proactive protection of domestic intellectual property and support for independent technology transformation are critical policy priorities. She called for accelerated efforts to roll out supporting policies, industry standards, and clinical guidelines to bring new domestic infectious disease products to market, and to integrate more innovative products into China’s national immunization program.

Looking ahead, SIIDB plans to expand the scale of its special R&D funds, launch a dedicated vaccine concept validation center, and establish a new innovation and technology transfer center focused on diagnostic tools for infectious diseases. The institute’s core strategic focus will remain on addressing threats from emerging and re-emerging infectious diseases and drug-resistant pathogens, to strengthen China’s public health preparedness and advance global biosecurity.

A small but notable milestone in rare plant conservation has been recorded in southwest China’s Yunnan province, where three intentionally introduced and cultivated dove trees (Davidia involucrata) have recently reached their peak blooming period at Caojian Forest Farm, located in Dali Bai Autonomous Prefecture.

Known colloquially as the dove tree for its unique floral structure, Davidia involucrata is an exceptionally rare ancient tree species endemic exclusively to China. Widely described as a “living fossil” from the Tertiary period, the species has been listed as a national first-class protected wild plant in China to safeguard its vulnerable wild populations. When the tree enters full bloom, it produces a striking visual display: a pair of large, pale white bracts surround each tiny flower, giving the entire tree the appearance of hundreds of white doves resting on branches, with the delicate bracts swaying gently in soft wind just like spreading dove wings.

The successful blooming of these cultivated trees marks a key achievement for ex situ conservation efforts for the endangered species. Ex situ cultivation, the practice of preserving rare plant species outside their original native habitats, is a critical strategy to prevent extinction and expand population sizes for threatened flora. The Caojian Forest Farm’s blooming cultivated dove trees demonstrate that targeted conservation and cultivation initiatives can effectively support the survival and reproduction of this rare endemic species, offering a solid foundation for future propagation and broader conservation work.

In a major push for global collaborative solar science, the China National Space Administration (CNSA) announced Friday that it is opening up opportunities for international partners to join its ambitious Xihe 2 solar observation mission, marking a significant step toward advancing shared human understanding of our host star. The announcement was made during the opening ceremony of China’s 11th annual Space Day, held in Chengdu, the capital of southwestern China’s Sichuan province.

As part of the cooperation initiative, CNSA is allocating approximately 15 kilograms of payload mass capacity exclusively for international research teams interested in contributing to the mission. Full, detailed technical documentation and specification requirements for interested partners are now available to the public on CNSA’s official website, where prospective applicants can access all information needed to submit collaboration proposals.

Unlike low-Earth orbit solar observation missions, Xihe 2 is scheduled for deployment to the Sun-Earth Lagrangian L5 point, a unique orbital position roughly 150 million kilometers from Earth, the same average distance that separates our planet from the Sun. This specific orbital location offers unprecedented observational advantages for long-term space weather research and continuous monitoring, providing a vantage point that cannot be matched by closer or alternative orbital arrangements.

The core scientific goals of the Xihe 2 mission are targeted at answering some of the most pressing open questions in solar physics. Researchers plan to use data collected from the mission to map and analyze the characteristics and evolutionary patterns of magnetic fields in solar active regions, which are the primary birthplaces of disruptive solar events. The mission also aims to uncover the full three-dimensional structure and underlying formation mechanisms of solar bursts such as coronal mass ejections and solar flares, and to track how these energetic events propagate through interplanetary space before reaching Earth’s vicinity. The insights gained from this research will directly support the development of more timely, reliable early warnings and accurate forecasts of space weather, which can protect critical satellite infrastructure, GPS systems, and power grids on Earth from solar-related disruptions.

BEIJING – A collaborative research initiative between the Institute of Chemistry at the Chinese Academy of Sciences (ICCAS) and the National University of Singapore has delivered a landmark breakthrough in the development of optical metamaterials, a cutting-edge class of engineered materials that promise to revolutionize next-generation photonic and optical technologies.

Announced on April 24, 2026, the team’s work addresses one of the most persistent bottlenecks holding back the widespread commercial adoption of optical metamaterials: the inability to produce large, custom-designed sheets of the material without sacrificing cost efficiency or performance. The researchers’ findings, which outline a completely new framework for scalable manufacturing of these advanced materials, were officially published in the peer-reviewed scientific journal *Nature* on April 23, 2026.

For decades, optical metamaterials – which are defined by their precisely engineered micro- and nanoscale structural arrangements that manipulate light in ways impossible for natural materials – have faced a persistent manufacturing trade-off. Traditional fabrication methods were either capable of producing small, highly customized batches for research at high cost, or limited to low-cost mass production that could not accommodate tailored design specifications needed for specific applications. This imbalance has restricted the translation of lab-based optical metamaterial breakthroughs into real-world commercial and industrial uses, from advanced optical sensors to flexible display technologies and ultra-compact imaging systems.

The joint research team resolved this long-standing challenge by developing the world’s first roll-to-roll additive nano-printing platform, a custom-built manufacturing system that brings together the benefits of additive manufacturing with high-throughput continuous production. This new approach achieves simultaneous synergistic optimization of both the material’s core optical properties and the flexible structural design required for diverse applications. By enabling low-cost, large-volume production while retaining the ability to create customized, multi-scale metamaterial structures, the new fabrication paradigm opens entirely new research pathways for the field of multi-scale optical metamaterials and unlocks practical new opportunities for micro-nano photonics applications across multiple industries.

The breakthrough comes as global research into metamaterials accelerates, driven by growing demand for advanced optical components that enable smaller, faster, and more efficient optical and photonic technologies. The team’s publication of their work in *Nature* underscores the significance of the advance for the international scientific community.

A team of Shanghai-based researchers has made a landmark advance in Alzheimer’s disease research, identifying a ‘brake’ gene that can slow the degenerative condition’s progression after developing the world’s first in vivo functional map of regulatory switches in astrocytes, the critical support cells that protect brain neurons. The discovery, which has already been successfully validated in Alzheimer’s mouse models, opens an entirely new pathway for developing life-changing treatments for neurodegenerative disorders.

The collaborative research project, led by scientists from the Center for Excellence in Brain Science and Intelligence Technology at the Chinese Academy of Sciences, Shanghai Sixth People’s Hospital, and biotechnology company Genemagic, was published on April 24, 2026, in the peer-reviewed journal *Science*. Unlike most existing Alzheimer’s therapies that focus on targeting beta-amyloid plaques, this work centers on the understudied role of astrocytes in disease progression, offering a complementary approach that could boost treatment outcomes for patients.

Astrocytes are abundant star-shaped cells in the human brain that work to sustain healthy neuronal function. But when Alzheimer’s develops, these critical support cells become dysfunctional, triggering a chain reaction that speeds up the death of neurons and worsens cognitive decline. For years, researchers have understood that stopping this harmful transformation requires identifying the transcription factors — molecular ‘switches’ that control astrocyte activity — but with more than 1,000 distinct transcription factors in the human body, pinpointing the molecules critical to astrocyte health has remained a major, unaddressed challenge.

To solve this problem, the research team developed an innovative in vivo high-throughput sequencing platform called iGOF-Perturb-seq, which enables large-scale, simultaneous analysis of transcription factor function in living organisms. Using adeno-associated viruses engineered to specifically target astrocytes, the team delivered genetic ‘instruction packages’ holding nearly 1,000 different transcription factors into astrocytes in live mouse brains, with each package tagged with a unique molecular barcode to track its impact. The researchers then used single-cell sequencing technology to analyze close to 400,000 individual astrocytes at once, linking each cell’s functional state to the specific transcription factor it had received. This groundbreaking process allowed the team to assemble the first complete functional map of astrocyte regulatory switches ever created.

“This map is like a treasure map, helping scientists quickly identify candidate master regulators that can prevent astrocytes from becoming dysfunctional,” explained Zhou Haibo, the lead scientist of the study. After screening the map for promising candidates, the team narrowed the list down to 39 potential molecules, and after rigorous testing, identified the transcription factor Ferd3l as the most potent regulator capable of repairing dysfunctional astrocytes.

To confirm the gene’s therapeutic potential, the research team tested Ferd3l in mouse models engineered to develop human Alzheimer’s disease. The team activated the Ferd3l gene in the mice’s astrocytes via intravenous injection, and the treated animals saw a dramatic improvement in their cognitive impairments. In standard cognitive tests including object recognition and maze navigation, treated mice performed nearly as well as healthy control mice.

Further analysis of the results showed that Ferd3l helps dysfunctional astrocytes re-establish healthy, cooperative interactions with both neurons and microglia — the brain’s primary immune cells — restoring functional order to the disrupted cellular environment that characterizes Alzheimer’s, according to Zhang Liansheng, first author of the published study.

The complete functional map of astrocyte regulators will be shared openly with research institutions and pharmaceutical companies across the globe, allowing scientists to use the resource to identify similar ‘brake’ genes and therapeutic targets for a wide range of other neurological conditions, including Parkinson’s disease, amyotrophic lateral sclerosis (ALS), and major depressive disorder. The team also noted that their work creates a shared library of potential new drug targets for neurological diseases, which can be expanded over time to support the development of personalized precision therapies for patients.

The research comes as China has already made progress in expanding Alzheimer’s treatment access: an innovative beta-amyloid targeting therapy launched in 2025 is now covered by supplemental public health insurance in major Chinese cities including Beijing, with clinical data showing sustained patient benefits even after treatment is discontinued following successful plaque clearance.

Zhou noted that moving the discovery from foundational research to real-world clinical applications will be the primary focus of the team’s upcoming work, bringing new hope to millions of people worldwide living with Alzheimer’s and related neurodegenerative conditions.